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Finding the Fourth Proportional to 124,580.20, 187,043.10 and 77,924.20

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Solution

The fourth proportional to 124,580.20, 187,043.10 and 77,924.20 is: 116,994.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,580.20 : 187,043.10 = 77,924.20 : x
  2. Step 2: Convert to fraction form
    124,580.20/187,043.10 = 77,924.20/x
  3. Step 3: Cross multiply
    124,580.20x = 187,043.10 × 77,924.20
  4. Step 4: Simplify right side
    124,580.20x = 14,575,183,933.02
  5. Step 5: Solve for x
    x = 14,575,183,933.02/124,580.20
  6. Step 6: Final answer
    x = 116,994.39

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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.