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Finding the Fourth Proportional to 65,400.32, 98,101.60 and 18,654.40

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Solution

The fourth proportional to 65,400.32, 98,101.60 and 18,654.40 is: 27,981.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,400.32 : 98,101.60 = 18,654.40 : x
  2. Step 2: Convert to fraction form
    65,400.32/98,101.60 = 18,654.40/x
  3. Step 3: Cross multiply
    65,400.32x = 98,101.60 × 18,654.40
  4. Step 4: Simplify right side
    65,400.32x = 1,830,026,487.04
  5. Step 5: Solve for x
    x = 1,830,026,487.04/65,400.32
  6. Step 6: Final answer
    x = 27,981.92

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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.