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Finding the Fourth Proportional to 622,706.92, 859,177.38 and 380,901.16

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Solution

The fourth proportional to 622,706.92, 859,177.38 and 380,901.16 is: 525,546.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,706.92 : 859,177.38 = 380,901.16 : x
  2. Step 2: Convert to fraction form
    622,706.92/859,177.38 = 380,901.16/x
  3. Step 3: Cross multiply
    622,706.92x = 859,177.38 × 380,901.16
  4. Step 4: Simplify right side
    622,706.92x = 327,261,660,687.76
  5. Step 5: Solve for x
    x = 327,261,660,687.76/622,706.92
  6. Step 6: Final answer
    x = 525,546.85

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Double scale
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Similar ratio
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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.