Home / 85,832,128.05-128,748,192.08-76,426,278.45

Finding the Fourth Proportional to 85,832,128.05, 128,748,192.08 and 76,426,278.45

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Solution

The fourth proportional to 85,832,128.05, 128,748,192.08 and 76,426,278.45 is: 114,639,417.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,832,128.05 : 128,748,192.08 = 76,426,278.45 : x
  2. Step 2: Convert to fraction form
    85,832,128.05/128,748,192.08 = 76,426,278.45/x
  3. Step 3: Cross multiply
    85,832,128.05x = 128,748,192.08 × 76,426,278.45
  4. Step 4: Simplify right side
    85,832,128.05x = 9,839,745,177,458,034
  5. Step 5: Solve for x
    x = 9,839,745,177,458,034/85,832,128.05
  6. Step 6: Final answer
    x = 114,639,417.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.