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Finding the Fourth Proportional to 59,871.60, 89,904.60 and 40,237.20

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Solution

The fourth proportional to 59,871.60, 89,904.60 and 40,237.20 is: 60,421.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,871.60 : 89,904.60 = 40,237.20 : x
  2. Step 2: Convert to fraction form
    59,871.60/89,904.60 = 40,237.20/x
  3. Step 3: Cross multiply
    59,871.60x = 89,904.60 × 40,237.20
  4. Step 4: Simplify right side
    59,871.60x = 3,617,509,371.12
  5. Step 5: Solve for x
    x = 3,617,509,371.12/59,871.60
  6. Step 6: Final answer
    x = 60,421.12

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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.