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Finding the Fourth Proportional to 82,907.20, 124,360.80 and 49,227.40

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Solution

The fourth proportional to 82,907.20, 124,360.80 and 49,227.40 is: 73,841.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,907.20 : 124,360.80 = 49,227.40 : x
  2. Step 2: Convert to fraction form
    82,907.20/124,360.80 = 49,227.40/x
  3. Step 3: Cross multiply
    82,907.20x = 124,360.80 × 49,227.40
  4. Step 4: Simplify right side
    82,907.20x = 6,121,958,845.92
  5. Step 5: Solve for x
    x = 6,121,958,845.92/82,907.20
  6. Step 6: Final answer
    x = 73,841.10

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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.