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Finding the Fourth Proportional to 124,887.84, 187,313.76 and 40,655.76

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Solution

The fourth proportional to 124,887.84, 187,313.76 and 40,655.76 is: 60,977.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,887.84 : 187,313.76 = 40,655.76 : x
  2. Step 2: Convert to fraction form
    124,887.84/187,313.76 = 40,655.76/x
  3. Step 3: Cross multiply
    124,887.84x = 187,313.76 × 40,655.76
  4. Step 4: Simplify right side
    124,887.84x = 7,615,383,271.26
  5. Step 5: Solve for x
    x = 7,615,383,271.26/124,887.84
  6. Step 6: Final answer
    x = 60,977.78

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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.