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Finding the Fourth Proportional to 363,112.40, 544,085.40 and 342,117.20

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Solution

The fourth proportional to 363,112.40, 544,085.40 and 342,117.20 is: 512,626.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,112.40 : 544,085.40 = 342,117.20 : x
  2. Step 2: Convert to fraction form
    363,112.40/544,085.40 = 342,117.20/x
  3. Step 3: Cross multiply
    363,112.40x = 544,085.40 × 342,117.20
  4. Step 4: Simplify right side
    363,112.40x = 186,140,973,608.88
  5. Step 5: Solve for x
    x = 186,140,973,608.88/363,112.40
  6. Step 6: Final answer
    x = 512,626.32

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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.