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Finding the Fourth Proportional to 145,416.60, 218,124.90 and 132,294.60

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Solution

The fourth proportional to 145,416.60, 218,124.90 and 132,294.60 is: 198,441.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,416.60 : 218,124.90 = 132,294.60 : x
  2. Step 2: Convert to fraction form
    145,416.60/218,124.90 = 132,294.60/x
  3. Step 3: Cross multiply
    145,416.60x = 218,124.90 × 132,294.60
  4. Step 4: Simplify right side
    145,416.60x = 28,856,746,395.54
  5. Step 5: Solve for x
    x = 28,856,746,395.54/145,416.60
  6. Step 6: Final answer
    x = 198,441.90

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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.