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Finding the Fourth Proportional to 89,647.90, 123,713.10 and 49,360.84

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Solution

The fourth proportional to 89,647.90, 123,713.10 and 49,360.84 is: 68,117.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,647.90 : 123,713.10 = 49,360.84 : x
  2. Step 2: Convert to fraction form
    89,647.90/123,713.10 = 49,360.84/x
  3. Step 3: Cross multiply
    89,647.90x = 123,713.10 × 49,360.84
  4. Step 4: Simplify right side
    89,647.90x = 6,106,582,535.00
  5. Step 5: Solve for x
    x = 6,106,582,535.00/89,647.90
  6. Step 6: Final answer
    x = 68,117.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.