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Finding the Fourth Proportional to 71,648.19, 98,866.65 and 41,428.94

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Solution

The fourth proportional to 71,648.19, 98,866.65 and 41,428.94 is: 57,167.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,648.19 : 98,866.65 = 41,428.94 : x
  2. Step 2: Convert to fraction form
    71,648.19/98,866.65 = 41,428.94/x
  3. Step 3: Cross multiply
    71,648.19x = 98,866.65 × 41,428.94
  4. Step 4: Simplify right side
    71,648.19x = 4,095,940,016.52
  5. Step 5: Solve for x
    x = 4,095,940,016.52/71,648.19
  6. Step 6: Final answer
    x = 57,167.39

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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.