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Finding the Fourth Proportional to 354,811.65, 532,053.45 and 155,029.20

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Solution

The fourth proportional to 354,811.65, 532,053.45 and 155,029.20 is: 232,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,811.65 : 532,053.45 = 155,029.20 : x
  2. Step 2: Convert to fraction form
    354,811.65/532,053.45 = 155,029.20/x
  3. Step 3: Cross multiply
    354,811.65x = 532,053.45 × 155,029.20
  4. Step 4: Simplify right side
    354,811.65x = 82,483,820,710.74
  5. Step 5: Solve for x
    x = 82,483,820,710.74/354,811.65
  6. Step 6: Final answer
    x = 232,472.13

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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.