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Finding the Fourth Proportional to 113,017.75, 155,971.80 and 62,716.75

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Solution

The fourth proportional to 113,017.75, 155,971.80 and 62,716.75 is: 86,553.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,017.75 : 155,971.80 = 62,716.75 : x
  2. Step 2: Convert to fraction form
    113,017.75/155,971.80 = 62,716.75/x
  3. Step 3: Cross multiply
    113,017.75x = 155,971.80 × 62,716.75
  4. Step 4: Simplify right side
    113,017.75x = 9,782,044,387.65
  5. Step 5: Solve for x
    x = 9,782,044,387.65/113,017.75
  6. Step 6: Final answer
    x = 86,553.17

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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.