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Finding the Fourth Proportional to 207,630.24, 311,248.32 and 67,290.24

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Solution

The fourth proportional to 207,630.24, 311,248.32 and 67,290.24 is: 100,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,630.24 : 311,248.32 = 67,290.24 : x
  2. Step 2: Convert to fraction form
    207,630.24/311,248.32 = 67,290.24/x
  3. Step 3: Cross multiply
    207,630.24x = 311,248.32 × 67,290.24
  4. Step 4: Simplify right side
    207,630.24x = 20,943,974,152.40
  5. Step 5: Solve for x
    x = 20,943,974,152.40/207,630.24
  6. Step 6: Final answer
    x = 100,871.50

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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.