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Finding the Fourth Proportional to 156,683.60, 235,126.20 and 86,613.20

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Solution

The fourth proportional to 156,683.60, 235,126.20 and 86,613.20 is: 129,975.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,683.60 : 235,126.20 = 86,613.20 : x
  2. Step 2: Convert to fraction form
    156,683.60/235,126.20 = 86,613.20/x
  3. Step 3: Cross multiply
    156,683.60x = 235,126.20 × 86,613.20
  4. Step 4: Simplify right side
    156,683.60x = 20,365,032,585.84
  5. Step 5: Solve for x
    x = 20,365,032,585.84/156,683.60
  6. Step 6: Final answer
    x = 129,975.52

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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.