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Finding the Fourth Proportional to 104,497.60, 156,784.80 and 42,174.40

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Solution

The fourth proportional to 104,497.60, 156,784.80 and 42,174.40 is: 63,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,497.60 : 156,784.80 = 42,174.40 : x
  2. Step 2: Convert to fraction form
    104,497.60/156,784.80 = 42,174.40/x
  3. Step 3: Cross multiply
    104,497.60x = 156,784.80 × 42,174.40
  4. Step 4: Simplify right side
    104,497.60x = 6,612,304,869.12
  5. Step 5: Solve for x
    x = 6,612,304,869.12/104,497.60
  6. Step 6: Final answer
    x = 63,277.10

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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.