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Finding the Fourth Proportional to 124,595.90, 186,671.10 and 75,820.40

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Solution

The fourth proportional to 124,595.90, 186,671.10 and 75,820.40 is: 113,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,595.90 : 186,671.10 = 75,820.40 : x
  2. Step 2: Convert to fraction form
    124,595.90/186,671.10 = 75,820.40/x
  3. Step 3: Cross multiply
    124,595.90x = 186,671.10 × 75,820.40
  4. Step 4: Simplify right side
    124,595.90x = 14,153,477,470.44
  5. Step 5: Solve for x
    x = 14,153,477,470.44/124,595.90
  6. Step 6: Final answer
    x = 113,595.05

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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.