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Finding the Fourth Proportional to 112,079.70, 167,623.83 and 99,686.70

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Solution

The fourth proportional to 112,079.70, 167,623.83 and 99,686.70 is: 149,089.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,079.70 : 167,623.83 = 99,686.70 : x
  2. Step 2: Convert to fraction form
    112,079.70/167,623.83 = 99,686.70/x
  3. Step 3: Cross multiply
    112,079.70x = 167,623.83 × 99,686.70
  4. Step 4: Simplify right side
    112,079.70x = 16,709,866,454.06
  5. Step 5: Solve for x
    x = 16,709,866,454.06/112,079.70
  6. Step 6: Final answer
    x = 149,089.14

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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.