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Finding the Fourth Proportional to 52,506.40, 78,732.40 and 15,565.60

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Solution

The fourth proportional to 52,506.40, 78,732.40 and 15,565.60 is: 23,340.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,506.40 : 78,732.40 = 15,565.60 : x
  2. Step 2: Convert to fraction form
    52,506.40/78,732.40 = 15,565.60/x
  3. Step 3: Cross multiply
    52,506.40x = 78,732.40 × 15,565.60
  4. Step 4: Simplify right side
    52,506.40x = 1,225,517,045.44
  5. Step 5: Solve for x
    x = 1,225,517,045.44/52,506.40
  6. Step 6: Final answer
    x = 23,340.34

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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.