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Finding the Fourth Proportional to 113,215.80, 169,386.30 and 73,849.80

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Solution

The fourth proportional to 113,215.80, 169,386.30 and 73,849.80 is: 110,489.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,215.80 : 169,386.30 = 73,849.80 : x
  2. Step 2: Convert to fraction form
    113,215.80/169,386.30 = 73,849.80/x
  3. Step 3: Cross multiply
    113,215.80x = 169,386.30 × 73,849.80
  4. Step 4: Simplify right side
    113,215.80x = 12,509,144,377.74
  5. Step 5: Solve for x
    x = 12,509,144,377.74/113,215.80
  6. Step 6: Final answer
    x = 110,489.39

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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.