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Finding the Fourth Proportional to 316,897.76, 437,317.92 and 173,659.04

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Solution

The fourth proportional to 316,897.76, 437,317.92 and 173,659.04 is: 239,648.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,897.76 : 437,317.92 = 173,659.04 : x
  2. Step 2: Convert to fraction form
    316,897.76/437,317.92 = 173,659.04/x
  3. Step 3: Cross multiply
    316,897.76x = 437,317.92 × 173,659.04
  4. Step 4: Simplify right side
    316,897.76x = 75,944,210,162.00
  5. Step 5: Solve for x
    x = 75,944,210,162.00/316,897.76
  6. Step 6: Final answer
    x = 239,648.93

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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.