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Finding the Fourth Proportional to 438,708.97, 605,459.24 and 266,587.21

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Solution

The fourth proportional to 438,708.97, 605,459.24 and 266,587.21 is: 367,915.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,708.97 : 605,459.24 = 266,587.21 : x
  2. Step 2: Convert to fraction form
    438,708.97/605,459.24 = 266,587.21/x
  3. Step 3: Cross multiply
    438,708.97x = 605,459.24 × 266,587.21
  4. Step 4: Simplify right side
    438,708.97x = 161,407,689,560.32
  5. Step 5: Solve for x
    x = 161,407,689,560.32/438,708.97
  6. Step 6: Final answer
    x = 367,915.18

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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.