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Finding the Fourth Proportional to 161,831.52, 242,125.20 and 98,640.18

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Solution

The fourth proportional to 161,831.52, 242,125.20 and 98,640.18 is: 147,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,831.52 : 242,125.20 = 98,640.18 : x
  2. Step 2: Convert to fraction form
    161,831.52/242,125.20 = 98,640.18/x
  3. Step 3: Cross multiply
    161,831.52x = 242,125.20 × 98,640.18
  4. Step 4: Simplify right side
    161,831.52x = 23,883,273,310.54
  5. Step 5: Solve for x
    x = 23,883,273,310.54/161,831.52
  6. Step 6: Final answer
    x = 147,581.10

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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.