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Finding the Fourth Proportional to 696,470.88, 960,632.16 and 639,291.84

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Solution

The fourth proportional to 696,470.88, 960,632.16 and 639,291.84 is: 881,765.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,470.88 : 960,632.16 = 639,291.84 : x
  2. Step 2: Convert to fraction form
    696,470.88/960,632.16 = 639,291.84/x
  3. Step 3: Cross multiply
    696,470.88x = 960,632.16 × 639,291.84
  4. Step 4: Simplify right side
    696,470.88x = 614,124,301,129.57
  5. Step 5: Solve for x
    x = 614,124,301,129.57/696,470.88
  6. Step 6: Final answer
    x = 881,765.94

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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.