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Finding the Fourth Proportional to 52,565.92, 72,540.42 and 28,692.40

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Solution

The fourth proportional to 52,565.92, 72,540.42 and 28,692.40 is: 39,595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,565.92 : 72,540.42 = 28,692.40 : x
  2. Step 2: Convert to fraction form
    52,565.92/72,540.42 = 28,692.40/x
  3. Step 3: Cross multiply
    52,565.92x = 72,540.42 × 28,692.40
  4. Step 4: Simplify right side
    52,565.92x = 2,081,358,746.81
  5. Step 5: Solve for x
    x = 2,081,358,746.81/52,565.92
  6. Step 6: Final answer
    x = 39,595.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.