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Finding the Fourth Proportional to 104,499.60, 156,787.80 and 42,176.40

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Solution

The fourth proportional to 104,499.60, 156,787.80 and 42,176.40 is: 63,280.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,499.60 : 156,787.80 = 42,176.40 : x
  2. Step 2: Convert to fraction form
    104,499.60/156,787.80 = 42,176.40/x
  3. Step 3: Cross multiply
    104,499.60x = 156,787.80 × 42,176.40
  4. Step 4: Simplify right side
    104,499.60x = 6,612,744,967.92
  5. Step 5: Solve for x
    x = 6,612,744,967.92/104,499.60
  6. Step 6: Final answer
    x = 63,280.10

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1.5x scale

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.