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Finding the Fourth Proportional to 761,679.70, 1,051,229.88 and 439,326.82

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Solution

The fourth proportional to 761,679.70, 1,051,229.88 and 439,326.82 is: 606,335.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,679.70 : 1,051,229.88 = 439,326.82 : x
  2. Step 2: Convert to fraction form
    761,679.70/1,051,229.88 = 439,326.82/x
  3. Step 3: Cross multiply
    761,679.70x = 1,051,229.88 × 439,326.82
  4. Step 4: Simplify right side
    761,679.70x = 461,833,480,269.38
  5. Step 5: Solve for x
    x = 461,833,480,269.38/761,679.70
  6. Step 6: Final answer
    x = 606,335.55

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Double scale
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1.5x scale

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.