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Finding the Fourth Proportional to 516,991.16, 775,486.92 and 162,032.72

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Solution

The fourth proportional to 516,991.16, 775,486.92 and 162,032.72 is: 243,049.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,991.16 : 775,486.92 = 162,032.72 : x
  2. Step 2: Convert to fraction form
    516,991.16/775,486.92 = 162,032.72/x
  3. Step 3: Cross multiply
    516,991.16x = 775,486.92 × 162,032.72
  4. Step 4: Simplify right side
    516,991.16x = 125,654,254,972.02
  5. Step 5: Solve for x
    x = 125,654,254,972.02/516,991.16
  6. Step 6: Final answer
    x = 243,049.14

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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.