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Finding the Fourth Proportional to 156,987.60, 235,957.18 and 103,860.80

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Solution

The fourth proportional to 156,987.60, 235,957.18 and 103,860.80 is: 156,105.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,987.60 : 235,957.18 = 103,860.80 : x
  2. Step 2: Convert to fraction form
    156,987.60/235,957.18 = 103,860.80/x
  3. Step 3: Cross multiply
    156,987.60x = 235,957.18 × 103,860.80
  4. Step 4: Simplify right side
    156,987.60x = 24,506,701,480.54
  5. Step 5: Solve for x
    x = 24,506,701,480.54/156,987.60
  6. Step 6: Final answer
    x = 156,105.97

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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.