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Finding the Fourth Proportional to 124,428.40, 186,642.60 and 41,322.40

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Solution

The fourth proportional to 124,428.40, 186,642.60 and 41,322.40 is: 61,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,428.40 : 186,642.60 = 41,322.40 : x
  2. Step 2: Convert to fraction form
    124,428.40/186,642.60 = 41,322.40/x
  3. Step 3: Cross multiply
    124,428.40x = 186,642.60 × 41,322.40
  4. Step 4: Simplify right side
    124,428.40x = 7,712,520,174.24
  5. Step 5: Solve for x
    x = 7,712,520,174.24/124,428.40
  6. Step 6: Final answer
    x = 61,983.60

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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.