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Finding the Fourth Proportional to 54,785.72, 75,535.74 and 45,724.16

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Solution

The fourth proportional to 54,785.72, 75,535.74 and 45,724.16 is: 63,042.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,785.72 : 75,535.74 = 45,724.16 : x
  2. Step 2: Convert to fraction form
    54,785.72/75,535.74 = 45,724.16/x
  3. Step 3: Cross multiply
    54,785.72x = 75,535.74 × 45,724.16
  4. Step 4: Simplify right side
    54,785.72x = 3,453,808,261.48
  5. Step 5: Solve for x
    x = 3,453,808,261.48/54,785.72
  6. Step 6: Final answer
    x = 63,042.13

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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.