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Finding the Fourth Proportional to 66,327.80, 99,426.90 and 59,329.40

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Solution

The fourth proportional to 66,327.80, 99,426.90 and 59,329.40 is: 88,936.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,327.80 : 99,426.90 = 59,329.40 : x
  2. Step 2: Convert to fraction form
    66,327.80/99,426.90 = 59,329.40/x
  3. Step 3: Cross multiply
    66,327.80x = 99,426.90 × 59,329.40
  4. Step 4: Simplify right side
    66,327.80x = 5,898,938,320.86
  5. Step 5: Solve for x
    x = 5,898,938,320.86/66,327.80
  6. Step 6: Final answer
    x = 88,936.14

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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.