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Finding the Fourth Proportional to 492,811,706.01, 679,971,429.42 and 291,768,753.15

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Solution

The fourth proportional to 492,811,706.01, 679,971,429.42 and 291,768,753.15 is: 402,576,508.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,811,706.01 : 679,971,429.42 = 291,768,753.15 : x
  2. Step 2: Convert to fraction form
    492,811,706.01/679,971,429.42 = 291,768,753.15/x
  3. Step 3: Cross multiply
    492,811,706.01x = 679,971,429.42 × 291,768,753.15
  4. Step 4: Simplify right side
    492,811,706.01x = 198,394,416,139,496,608
  5. Step 5: Solve for x
    x = 198,394,416,139,496,608/492,811,706.01
  6. Step 6: Final answer
    x = 402,576,508.88

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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.