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Finding the Fourth Proportional to 622,672.56, 859,352.88 and 381,116.16

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Solution

The fourth proportional to 622,672.56, 859,352.88 and 381,116.16 is: 525,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,672.56 : 859,352.88 = 381,116.16 : x
  2. Step 2: Convert to fraction form
    622,672.56/859,352.88 = 381,116.16/x
  3. Step 3: Cross multiply
    622,672.56x = 859,352.88 × 381,116.16
  4. Step 4: Simplify right side
    622,672.56x = 327,513,269,710.54
  5. Step 5: Solve for x
    x = 327,513,269,710.54/622,672.56
  6. Step 6: Final answer
    x = 525,979.93

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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.