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Finding the Fourth Proportional to 157,098.18, 216,799.37 and 85,482.13

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Solution

The fourth proportional to 157,098.18, 216,799.37 and 85,482.13 is: 117,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,098.18 : 216,799.37 = 85,482.13 : x
  2. Step 2: Convert to fraction form
    157,098.18/216,799.37 = 85,482.13/x
  3. Step 3: Cross multiply
    157,098.18x = 216,799.37 × 85,482.13
  4. Step 4: Simplify right side
    157,098.18x = 18,532,471,502.85
  5. Step 5: Solve for x
    x = 18,532,471,502.85/157,098.18
  6. Step 6: Final answer
    x = 117,967.45

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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.