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Finding the Fourth Proportional to 55,620.60, 83,432.95 and 28,595.71

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Solution

The fourth proportional to 55,620.60, 83,432.95 and 28,595.71 is: 42,894.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,620.60 : 83,432.95 = 28,595.71 : x
  2. Step 2: Convert to fraction form
    55,620.60/83,432.95 = 28,595.71/x
  3. Step 3: Cross multiply
    55,620.60x = 83,432.95 × 28,595.71
  4. Step 4: Simplify right side
    55,620.60x = 2,385,824,442.64
  5. Step 5: Solve for x
    x = 2,385,824,442.64/55,620.60
  6. Step 6: Final answer
    x = 42,894.62

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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.