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Finding the Fourth Proportional to 525,685.32, 725,445.54 and 283,967.91

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Solution

The fourth proportional to 525,685.32, 725,445.54 and 283,967.91 is: 391,875.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,685.32 : 725,445.54 = 283,967.91 : x
  2. Step 2: Convert to fraction form
    525,685.32/725,445.54 = 283,967.91/x
  3. Step 3: Cross multiply
    525,685.32x = 725,445.54 × 283,967.91
  4. Step 4: Simplify right side
    525,685.32x = 206,003,253,812.62
  5. Step 5: Solve for x
    x = 206,003,253,812.62/525,685.32
  6. Step 6: Final answer
    x = 391,875.61

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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.