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Finding the Fourth Proportional to 124,317.40, 186,038.70 and 113,819.80

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Solution

The fourth proportional to 124,317.40, 186,038.70 and 113,819.80 is: 170,329.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,317.40 : 186,038.70 = 113,819.80 : x
  2. Step 2: Convert to fraction form
    124,317.40/186,038.70 = 113,819.80/x
  3. Step 3: Cross multiply
    124,317.40x = 186,038.70 × 113,819.80
  4. Step 4: Simplify right side
    124,317.40x = 21,174,887,626.26
  5. Step 5: Solve for x
    x = 21,174,887,626.26/124,317.40
  6. Step 6: Final answer
    x = 170,329.23

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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.