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Finding the Fourth Proportional to 67,303.40, 100,955.10 and 60,621.80

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Solution

The fourth proportional to 67,303.40, 100,955.10 and 60,621.80 is: 90,932.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,303.40 : 100,955.10 = 60,621.80 : x
  2. Step 2: Convert to fraction form
    67,303.40/100,955.10 = 60,621.80/x
  3. Step 3: Cross multiply
    67,303.40x = 100,955.10 × 60,621.80
  4. Step 4: Simplify right side
    67,303.40x = 6,120,079,881.18
  5. Step 5: Solve for x
    x = 6,120,079,881.18/67,303.40
  6. Step 6: Final answer
    x = 90,932.70

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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.