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Finding the Fourth Proportional to 260,062.47, 390,065.76 and 176,359.91

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Solution

The fourth proportional to 260,062.47, 390,065.76 and 176,359.91 is: 264,520.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,062.47 : 390,065.76 = 176,359.91 : x
  2. Step 2: Convert to fraction form
    260,062.47/390,065.76 = 176,359.91/x
  3. Step 3: Cross multiply
    260,062.47x = 390,065.76 × 176,359.91
  4. Step 4: Simplify right side
    260,062.47x = 68,791,960,377.35
  5. Step 5: Solve for x
    x = 68,791,960,377.35/260,062.47
  6. Step 6: Final answer
    x = 264,520.91

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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.