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Finding the Fourth Proportional to 681,598.96, 940,819.62 and 439,882

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Solution

The fourth proportional to 681,598.96, 940,819.62 and 439,882 is: 607,174.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,598.96 : 940,819.62 = 439,882 : x
  2. Step 2: Convert to fraction form
    681,598.96/940,819.62 = 439,882/x
  3. Step 3: Cross multiply
    681,598.96x = 940,819.62 × 439,882
  4. Step 4: Simplify right side
    681,598.96x = 413,849,616,084.84
  5. Step 5: Solve for x
    x = 413,849,616,084.84/681,598.96
  6. Step 6: Final answer
    x = 607,174.66

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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.