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Finding the Fourth Proportional to 15,315.60, 22,929.60 and 9,432.60

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Solution

The fourth proportional to 15,315.60, 22,929.60 and 9,432.60 is: 14,121.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.60 : 22,929.60 = 9,432.60 : x
  2. Step 2: Convert to fraction form
    15,315.60/22,929.60 = 9,432.60/x
  3. Step 3: Cross multiply
    15,315.60x = 22,929.60 × 9,432.60
  4. Step 4: Simplify right side
    15,315.60x = 216,285,744.96
  5. Step 5: Solve for x
    x = 216,285,744.96/15,315.60
  6. Step 6: Final answer
    x = 14,121.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.