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Finding the Fourth Proportional to 156,628.96, 216,149.60 and 85,009.60

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Solution

The fourth proportional to 156,628.96, 216,149.60 and 85,009.60 is: 117,314.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,628.96 : 216,149.60 = 85,009.60 : x
  2. Step 2: Convert to fraction form
    156,628.96/216,149.60 = 85,009.60/x
  3. Step 3: Cross multiply
    156,628.96x = 216,149.60 × 85,009.60
  4. Step 4: Simplify right side
    156,628.96x = 18,374,791,036.16
  5. Step 5: Solve for x
    x = 18,374,791,036.16/156,628.96
  6. Step 6: Final answer
    x = 117,314.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.