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Finding the Fourth Proportional to 161,712.60, 242,568.90 and 73,008.60

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Solution

The fourth proportional to 161,712.60, 242,568.90 and 73,008.60 is: 109,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,712.60 : 242,568.90 = 73,008.60 : x
  2. Step 2: Convert to fraction form
    161,712.60/242,568.90 = 73,008.60/x
  3. Step 3: Cross multiply
    161,712.60x = 242,568.90 × 73,008.60
  4. Step 4: Simplify right side
    161,712.60x = 17,709,615,792.54
  5. Step 5: Solve for x
    x = 17,709,615,792.54/161,712.60
  6. Step 6: Final answer
    x = 109,512.90

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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.