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Finding the Fourth Proportional to 118,693.60, 178,069.20 and 83,701.60

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Solution

The fourth proportional to 118,693.60, 178,069.20 and 83,701.60 is: 125,572.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,693.60 : 178,069.20 = 83,701.60 : x
  2. Step 2: Convert to fraction form
    118,693.60/178,069.20 = 83,701.60/x
  3. Step 3: Cross multiply
    118,693.60x = 178,069.20 × 83,701.60
  4. Step 4: Simplify right side
    118,693.60x = 14,904,676,950.72
  5. Step 5: Solve for x
    x = 14,904,676,950.72/118,693.60
  6. Step 6: Final answer
    x = 125,572.71

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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.