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Finding the Fourth Proportional to 60,402.56, 89,991.52 and 57,428.32

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Solution

The fourth proportional to 60,402.56, 89,991.52 and 57,428.32 is: 85,560.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,402.56 : 89,991.52 = 57,428.32 : x
  2. Step 2: Convert to fraction form
    60,402.56/89,991.52 = 57,428.32/x
  3. Step 3: Cross multiply
    60,402.56x = 89,991.52 × 57,428.32
  4. Step 4: Simplify right side
    60,402.56x = 5,168,061,807.85
  5. Step 5: Solve for x
    x = 5,168,061,807.85/60,402.56
  6. Step 6: Final answer
    x = 85,560.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.