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Finding the Fourth Proportional to 124,703.64, 187,049.52 and 45,811.80

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Solution

The fourth proportional to 124,703.64, 187,049.52 and 45,811.80 is: 68,715.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,703.64 : 187,049.52 = 45,811.80 : x
  2. Step 2: Convert to fraction form
    124,703.64/187,049.52 = 45,811.80/x
  3. Step 3: Cross multiply
    124,703.64x = 187,049.52 × 45,811.80
  4. Step 4: Simplify right side
    124,703.64x = 8,569,075,200.34
  5. Step 5: Solve for x
    x = 8,569,075,200.34/124,703.64
  6. Step 6: Final answer
    x = 68,715.52

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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.