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Finding the Fourth Proportional to 66,515.80, 99,773.70 and 59,298.70

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Solution

The fourth proportional to 66,515.80, 99,773.70 and 59,298.70 is: 88,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.80 : 99,773.70 = 59,298.70 : x
  2. Step 2: Convert to fraction form
    66,515.80/99,773.70 = 59,298.70/x
  3. Step 3: Cross multiply
    66,515.80x = 99,773.70 × 59,298.70
  4. Step 4: Simplify right side
    66,515.80x = 5,916,450,704.19
  5. Step 5: Solve for x
    x = 5,916,450,704.19/66,515.80
  6. Step 6: Final answer
    x = 88,948.05

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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.