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Finding the Fourth Proportional to 124,651.76, 186,977.63 and 58,138.40

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Solution

The fourth proportional to 124,651.76, 186,977.63 and 58,138.40 is: 87,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,651.76 : 186,977.63 = 58,138.40 : x
  2. Step 2: Convert to fraction form
    124,651.76/186,977.63 = 58,138.40/x
  3. Step 3: Cross multiply
    124,651.76x = 186,977.63 × 58,138.40
  4. Step 4: Simplify right side
    124,651.76x = 10,870,580,420.74
  5. Step 5: Solve for x
    x = 10,870,580,420.74/124,651.76
  6. Step 6: Final answer
    x = 87,207.60

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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.