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Finding the Fourth Proportional to 85,117.48, 127,671.42 and 37,718.92

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Solution

The fourth proportional to 85,117.48, 127,671.42 and 37,718.92 is: 56,576.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,117.48 : 127,671.42 = 37,718.92 : x
  2. Step 2: Convert to fraction form
    85,117.48/127,671.42 = 37,718.92/x
  3. Step 3: Cross multiply
    85,117.48x = 127,671.42 × 37,718.92
  4. Step 4: Simplify right side
    85,117.48x = 4,815,628,077.27
  5. Step 5: Solve for x
    x = 4,815,628,077.27/85,117.48
  6. Step 6: Final answer
    x = 56,576.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.