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Finding the Fourth Proportional to 628,679.61, 938,455.15 and 581,843.79

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Solution

The fourth proportional to 628,679.61, 938,455.15 and 581,843.79 is: 868,541.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,679.61 : 938,455.15 = 581,843.79 : x
  2. Step 2: Convert to fraction form
    628,679.61/938,455.15 = 581,843.79/x
  3. Step 3: Cross multiply
    628,679.61x = 938,455.15 × 581,843.79
  4. Step 4: Simplify right side
    628,679.61x = 546,034,293,619.52
  5. Step 5: Solve for x
    x = 546,034,293,619.52/628,679.61
  6. Step 6: Final answer
    x = 868,541.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.