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Finding the Fourth Proportional to 84,115.30, 116,079.22 and 45,874.92

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Solution

The fourth proportional to 84,115.30, 116,079.22 and 45,874.92 is: 63,307.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,115.30 : 116,079.22 = 45,874.92 : x
  2. Step 2: Convert to fraction form
    84,115.30/116,079.22 = 45,874.92/x
  3. Step 3: Cross multiply
    84,115.30x = 116,079.22 × 45,874.92
  4. Step 4: Simplify right side
    84,115.30x = 5,325,124,931.16
  5. Step 5: Solve for x
    x = 5,325,124,931.16/84,115.30
  6. Step 6: Final answer
    x = 63,307.45

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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.