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Finding the Fourth Proportional to 671,393.60, 926,718.82 and 438,854.33

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Solution

The fourth proportional to 671,393.60, 926,718.82 and 438,854.33 is: 605,746.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,393.60 : 926,718.82 = 438,854.33 : x
  2. Step 2: Convert to fraction form
    671,393.60/926,718.82 = 438,854.33/x
  3. Step 3: Cross multiply
    671,393.60x = 926,718.82 × 438,854.33
  4. Step 4: Simplify right side
    671,393.60x = 406,694,566,849.49
  5. Step 5: Solve for x
    x = 406,694,566,849.49/671,393.60
  6. Step 6: Final answer
    x = 605,746.86

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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.