Home / 20,547,197,950.05-28,353,401,347.01-11,391,971,085.09

Finding the Fourth Proportional to 20,547,197,950.05, 28,353,401,347.01 and 11,391,971,085.09

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Solution

The fourth proportional to 20,547,197,950.05, 28,353,401,347.01 and 11,391,971,085.09 is: 15,719,959,923.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547,197,950.05 : 28,353,401,347.01 = 11,391,971,085.09 : x
  2. Step 2: Convert to fraction form
    20,547,197,950.05/28,353,401,347.01 = 11,391,971,085.09/x
  3. Step 3: Cross multiply
    20,547,197,950.05x = 28,353,401,347.01 × 11,391,971,085.09
  4. Step 4: Simplify right side
    20,547,197,950.05x = 323,001,128,309,032,812,544
  5. Step 5: Solve for x
    x = 323,001,128,309,032,812,544/20,547,197,950.05
  6. Step 6: Final answer
    x = 15,719,959,923.21

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.