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Finding the Fourth Proportional to 61,876.38, 85,389.75 and 35,018.94

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Solution

The fourth proportional to 61,876.38, 85,389.75 and 35,018.94 is: 48,326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,876.38 : 85,389.75 = 35,018.94 : x
  2. Step 2: Convert to fraction form
    61,876.38/85,389.75 = 35,018.94/x
  3. Step 3: Cross multiply
    61,876.38x = 85,389.75 × 35,018.94
  4. Step 4: Simplify right side
    61,876.38x = 2,990,258,531.87
  5. Step 5: Solve for x
    x = 2,990,258,531.87/61,876.38
  6. Step 6: Final answer
    x = 48,326.33

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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.