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Finding the Fourth Proportional to 289,641,632.90, 399,719,814.10 and 179,668,775.30

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Solution

The fourth proportional to 289,641,632.90, 399,719,814.10 and 179,668,775.30 is: 247,951,818.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,641,632.90 : 399,719,814.10 = 179,668,775.30 : x
  2. Step 2: Convert to fraction form
    289,641,632.90/399,719,814.10 = 179,668,775.30/x
  3. Step 3: Cross multiply
    289,641,632.90x = 399,719,814.10 × 179,668,775.30
  4. Step 4: Simplify right side
    289,641,632.90x = 71,817,169,462,490,680
  5. Step 5: Solve for x
    x = 71,817,169,462,490,680/289,641,632.90
  6. Step 6: Final answer
    x = 247,951,818.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.