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Finding the Fourth Proportional to 156,657.60, 235,059.30 and 81,862.20

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Solution

The fourth proportional to 156,657.60, 235,059.30 and 81,862.20 is: 122,831.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,657.60 : 235,059.30 = 81,862.20 : x
  2. Step 2: Convert to fraction form
    156,657.60/235,059.30 = 81,862.20/x
  3. Step 3: Cross multiply
    156,657.60x = 235,059.30 × 81,862.20
  4. Step 4: Simplify right side
    156,657.60x = 19,242,471,428.46
  5. Step 5: Solve for x
    x = 19,242,471,428.46/156,657.60
  6. Step 6: Final answer
    x = 122,831.39

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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.