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Finding the Fourth Proportional to 86,675.91, 119,610.48 and 48,435.78

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Solution

The fourth proportional to 86,675.91, 119,610.48 and 48,435.78 is: 66,840.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,675.91 : 119,610.48 = 48,435.78 : x
  2. Step 2: Convert to fraction form
    86,675.91/119,610.48 = 48,435.78/x
  3. Step 3: Cross multiply
    86,675.91x = 119,610.48 × 48,435.78
  4. Step 4: Simplify right side
    86,675.91x = 5,793,426,894.97
  5. Step 5: Solve for x
    x = 5,793,426,894.97/86,675.91
  6. Step 6: Final answer
    x = 66,840.10

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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.