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Finding the Fourth Proportional to 518,000.62, 777,054.91 and 198,151.87

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Solution

The fourth proportional to 518,000.62, 777,054.91 and 198,151.87 is: 297,248.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,000.62 : 777,054.91 = 198,151.87 : x
  2. Step 2: Convert to fraction form
    518,000.62/777,054.91 = 198,151.87/x
  3. Step 3: Cross multiply
    518,000.62x = 777,054.91 × 198,151.87
  4. Step 4: Simplify right side
    518,000.62x = 153,974,879,623.91
  5. Step 5: Solve for x
    x = 153,974,879,623.91/518,000.62
  6. Step 6: Final answer
    x = 297,248.45

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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.