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Finding the Fourth Proportional to 86,107.68, 129,151.80 and 29,938.32

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Solution

The fourth proportional to 86,107.68, 129,151.80 and 29,938.32 is: 44,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,107.68 : 129,151.80 = 29,938.32 : x
  2. Step 2: Convert to fraction form
    86,107.68/129,151.80 = 29,938.32/x
  3. Step 3: Cross multiply
    86,107.68x = 129,151.80 × 29,938.32
  4. Step 4: Simplify right side
    86,107.68x = 3,866,587,916.98
  5. Step 5: Solve for x
    x = 3,866,587,916.98/86,107.68
  6. Step 6: Final answer
    x = 44,904.10

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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.