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Finding the Fourth Proportional to 320,468.91, 480,555.15 and 118,013.88

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Solution

The fourth proportional to 320,468.91, 480,555.15 and 118,013.88 is: 176,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,468.91 : 480,555.15 = 118,013.88 : x
  2. Step 2: Convert to fraction form
    320,468.91/480,555.15 = 118,013.88/x
  3. Step 3: Cross multiply
    320,468.91x = 480,555.15 × 118,013.88
  4. Step 4: Simplify right side
    320,468.91x = 56,712,177,805.48
  5. Step 5: Solve for x
    x = 56,712,177,805.48/320,468.91
  6. Step 6: Final answer
    x = 176,966.24

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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.