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Finding the Fourth Proportional to 115,373.40, 173,060.10 and 70,855.80

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Solution

The fourth proportional to 115,373.40, 173,060.10 and 70,855.80 is: 106,283.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,373.40 : 173,060.10 = 70,855.80 : x
  2. Step 2: Convert to fraction form
    115,373.40/173,060.10 = 70,855.80/x
  3. Step 3: Cross multiply
    115,373.40x = 173,060.10 × 70,855.80
  4. Step 4: Simplify right side
    115,373.40x = 12,262,311,833.58
  5. Step 5: Solve for x
    x = 12,262,311,833.58/115,373.40
  6. Step 6: Final answer
    x = 106,283.70

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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.