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Finding the Fourth Proportional to 681,882.87, 940,769.93 and 440,328.72

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Solution

The fourth proportional to 681,882.87, 940,769.93 and 440,328.72 is: 607,506.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,882.87 : 940,769.93 = 440,328.72 : x
  2. Step 2: Convert to fraction form
    681,882.87/940,769.93 = 440,328.72/x
  3. Step 3: Cross multiply
    681,882.87x = 940,769.93 × 440,328.72
  4. Step 4: Simplify right side
    681,882.87x = 414,248,016,889.75
  5. Step 5: Solve for x
    x = 414,248,016,889.75/681,882.87
  6. Step 6: Final answer
    x = 607,506.12

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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.