Home / 20,547,197,812.80-28,353,401,157.60-11,391,970,947.84

Finding the Fourth Proportional to 20,547,197,812.80, 28,353,401,157.60 and 11,391,970,947.84

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Solution

The fourth proportional to 20,547,197,812.80, 28,353,401,157.60 and 11,391,970,947.84 is: 15,719,959,733.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547,197,812.80 : 28,353,401,157.60 = 11,391,970,947.84 : x
  2. Step 2: Convert to fraction form
    20,547,197,812.80/28,353,401,157.60 = 11,391,970,947.84/x
  3. Step 3: Cross multiply
    20,547,197,812.80x = 28,353,401,157.60 × 11,391,970,947.84
  4. Step 4: Simplify right side
    20,547,197,812.80x = 323,001,122,259,832,209,408
  5. Step 5: Solve for x
    x = 323,001,122,259,832,209,408/20,547,197,812.80
  6. Step 6: Final answer
    x = 15,719,959,733.81

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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.