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Finding the Fourth Proportional to 191,505.34, 287,258.31 and 79,062.15

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Solution

The fourth proportional to 191,505.34, 287,258.31 and 79,062.15 is: 118,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,505.34 : 287,258.31 = 79,062.15 : x
  2. Step 2: Convert to fraction form
    191,505.34/287,258.31 = 79,062.15/x
  3. Step 3: Cross multiply
    191,505.34x = 287,258.31 × 79,062.15
  4. Step 4: Simplify right side
    191,505.34x = 22,711,259,593.97
  5. Step 5: Solve for x
    x = 22,711,259,593.97/191,505.34
  6. Step 6: Final answer
    x = 118,593.35

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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.