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Finding the Fourth Proportional to 124,296.40, 186,509.40 and 54,182.80

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Solution

The fourth proportional to 124,296.40, 186,509.40 and 54,182.80 is: 81,302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,296.40 : 186,509.40 = 54,182.80 : x
  2. Step 2: Convert to fraction form
    124,296.40/186,509.40 = 54,182.80/x
  3. Step 3: Cross multiply
    124,296.40x = 186,509.40 × 54,182.80
  4. Step 4: Simplify right side
    124,296.40x = 10,105,601,518.32
  5. Step 5: Solve for x
    x = 10,105,601,518.32/124,296.40
  6. Step 6: Final answer
    x = 81,302.45

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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.