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Finding the Fourth Proportional to 316,700.31, 475,066.80 and 80,045.04

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Solution

The fourth proportional to 316,700.31, 475,066.80 and 80,045.04 is: 120,071.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,700.31 : 475,066.80 = 80,045.04 : x
  2. Step 2: Convert to fraction form
    316,700.31/475,066.80 = 80,045.04/x
  3. Step 3: Cross multiply
    316,700.31x = 475,066.80 × 80,045.04
  4. Step 4: Simplify right side
    316,700.31x = 38,026,741,008.67
  5. Step 5: Solve for x
    x = 38,026,741,008.67/316,700.31
  6. Step 6: Final answer
    x = 120,071.69

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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.