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Finding the Fourth Proportional to 172,386,046.20, 258,579,069.30 and 172,386,046.20

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Solution

The fourth proportional to 172,386,046.20, 258,579,069.30 and 172,386,046.20 is: 258,579,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,386,046.20 : 258,579,069.30 = 172,386,046.20 : x
  2. Step 2: Convert to fraction form
    172,386,046.20/258,579,069.30 = 172,386,046.20/x
  3. Step 3: Cross multiply
    172,386,046.20x = 258,579,069.30 × 172,386,046.20
  4. Step 4: Simplify right side
    172,386,046.20x = 44,575,423,386,702,800
  5. Step 5: Solve for x
    x = 44,575,423,386,702,800/172,386,046.20
  6. Step 6: Final answer
    x = 258,579,069.30

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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.