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Finding the Fourth Proportional to 112,999.95, 155,939.43 and 62,013.51

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Solution

The fourth proportional to 112,999.95, 155,939.43 and 62,013.51 is: 85,578.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,999.95 : 155,939.43 = 62,013.51 : x
  2. Step 2: Convert to fraction form
    112,999.95/155,939.43 = 62,013.51/x
  3. Step 3: Cross multiply
    112,999.95x = 155,939.43 × 62,013.51
  4. Step 4: Simplify right side
    112,999.95x = 9,670,351,401.70
  5. Step 5: Solve for x
    x = 9,670,351,401.70/112,999.95
  6. Step 6: Final answer
    x = 85,578.37

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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.