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Finding the Fourth Proportional to 539,420.82, 805,029.58 and 479,635.26

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Solution

The fourth proportional to 539,420.82, 805,029.58 and 479,635.26 is: 715,805.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,420.82 : 805,029.58 = 479,635.26 : x
  2. Step 2: Convert to fraction form
    539,420.82/805,029.58 = 479,635.26/x
  3. Step 3: Cross multiply
    539,420.82x = 805,029.58 × 479,635.26
  4. Step 4: Simplify right side
    539,420.82x = 386,120,569,512.82
  5. Step 5: Solve for x
    x = 386,120,569,512.82/539,420.82
  6. Step 6: Final answer
    x = 715,805.83

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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.