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Finding the Fourth Proportional to 112,999.88, 155,939.84 and 62,698.88

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Solution

The fourth proportional to 112,999.88, 155,939.84 and 62,698.88 is: 86,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,999.88 : 155,939.84 = 62,698.88 : x
  2. Step 2: Convert to fraction form
    112,999.88/155,939.84 = 62,698.88/x
  3. Step 3: Cross multiply
    112,999.88x = 155,939.84 × 62,698.88
  4. Step 4: Simplify right side
    112,999.88x = 9,777,252,222.19
  5. Step 5: Solve for x
    x = 9,777,252,222.19/112,999.88
  6. Step 6: Final answer
    x = 86,524.45

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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.