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Finding the Fourth Proportional to 516,487.96, 774,776.58 and 142,510.96

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Solution

The fourth proportional to 516,487.96, 774,776.58 and 142,510.96 is: 213,778.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,487.96 : 774,776.58 = 142,510.96 : x
  2. Step 2: Convert to fraction form
    516,487.96/774,776.58 = 142,510.96/x
  3. Step 3: Cross multiply
    516,487.96x = 774,776.58 × 142,510.96
  4. Step 4: Simplify right side
    516,487.96x = 110,414,154,201.32
  5. Step 5: Solve for x
    x = 110,414,154,201.32/516,487.96
  6. Step 6: Final answer
    x = 213,778.76

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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.