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Finding the Fourth Proportional to 124,637.40, 186,980.40 and 53,559.90

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Solution

The fourth proportional to 124,637.40, 186,980.40 and 53,559.90 is: 80,350.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,637.40 : 186,980.40 = 53,559.90 : x
  2. Step 2: Convert to fraction form
    124,637.40/186,980.40 = 53,559.90/x
  3. Step 3: Cross multiply
    124,637.40x = 186,980.40 × 53,559.90
  4. Step 4: Simplify right side
    124,637.40x = 10,014,651,525.96
  5. Step 5: Solve for x
    x = 10,014,651,525.96/124,637.40
  6. Step 6: Final answer
    x = 80,350.29

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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.