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Finding the Fourth Proportional to 157,017.53, 216,591.74 and 98,781.48

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Solution

The fourth proportional to 157,017.53, 216,591.74 and 98,781.48 is: 136,260.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,017.53 : 216,591.74 = 98,781.48 : x
  2. Step 2: Convert to fraction form
    157,017.53/216,591.74 = 98,781.48/x
  3. Step 3: Cross multiply
    157,017.53x = 216,591.74 × 98,781.48
  4. Step 4: Simplify right side
    157,017.53x = 21,395,253,321.72
  5. Step 5: Solve for x
    x = 21,395,253,321.72/157,017.53
  6. Step 6: Final answer
    x = 136,260.28

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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.