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Finding the Fourth Proportional to 124,308.66, 186,489.98 and 45,422.76

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Solution

The fourth proportional to 124,308.66, 186,489.98 and 45,422.76 is: 68,144.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,308.66 : 186,489.98 = 45,422.76 : x
  2. Step 2: Convert to fraction form
    124,308.66/186,489.98 = 45,422.76/x
  3. Step 3: Cross multiply
    124,308.66x = 186,489.98 × 45,422.76
  4. Step 4: Simplify right side
    124,308.66x = 8,470,889,603.94
  5. Step 5: Solve for x
    x = 8,470,889,603.94/124,308.66
  6. Step 6: Final answer
    x = 68,144.00

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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.