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Finding the Fourth Proportional to 59,428.80, 89,013.60 and 52,862.40

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Solution

The fourth proportional to 59,428.80, 89,013.60 and 52,862.40 is: 79,178.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,428.80 : 89,013.60 = 52,862.40 : x
  2. Step 2: Convert to fraction form
    59,428.80/89,013.60 = 52,862.40/x
  3. Step 3: Cross multiply
    59,428.80x = 89,013.60 × 52,862.40
  4. Step 4: Simplify right side
    59,428.80x = 4,705,472,528.64
  5. Step 5: Solve for x
    x = 4,705,472,528.64/59,428.80
  6. Step 6: Final answer
    x = 79,178.32

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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.