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Finding the Fourth Proportional to 622,445.61, 932,171.63 and 355,396.71

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Solution

The fourth proportional to 622,445.61, 932,171.63 and 355,396.71 is: 532,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,445.61 : 932,171.63 = 355,396.71 : x
  2. Step 2: Convert to fraction form
    622,445.61/932,171.63 = 355,396.71/x
  3. Step 3: Cross multiply
    622,445.61x = 932,171.63 × 355,396.71
  4. Step 4: Simplify right side
    622,445.61x = 331,290,730,457.34
  5. Step 5: Solve for x
    x = 331,290,730,457.34/622,445.61
  6. Step 6: Final answer
    x = 532,240.45

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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.