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Finding the Fourth Proportional to 417,340.40, 626,010.60 and 121,852.40

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Solution

The fourth proportional to 417,340.40, 626,010.60 and 121,852.40 is: 182,778.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,340.40 : 626,010.60 = 121,852.40 : x
  2. Step 2: Convert to fraction form
    417,340.40/626,010.60 = 121,852.40/x
  3. Step 3: Cross multiply
    417,340.40x = 626,010.60 × 121,852.40
  4. Step 4: Simplify right side
    417,340.40x = 76,280,894,035.44
  5. Step 5: Solve for x
    x = 76,280,894,035.44/417,340.40
  6. Step 6: Final answer
    x = 182,778.60

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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.