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Finding the Fourth Proportional to 638,706.47, 881,374.50 and 366,582.92

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Solution

The fourth proportional to 638,706.47, 881,374.50 and 366,582.92 is: 505,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,706.47 : 881,374.50 = 366,582.92 : x
  2. Step 2: Convert to fraction form
    638,706.47/881,374.50 = 366,582.92/x
  3. Step 3: Cross multiply
    638,706.47x = 881,374.50 × 366,582.92
  4. Step 4: Simplify right side
    638,706.47x = 323,096,833,416.67
  5. Step 5: Solve for x
    x = 323,096,833,416.67/638,706.47
  6. Step 6: Final answer
    x = 505,861.22

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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.