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Finding the Fourth Proportional to 606,427.40, 909,641.10 and 185,648.60

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Solution

The fourth proportional to 606,427.40, 909,641.10 and 185,648.60 is: 278,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,427.40 : 909,641.10 = 185,648.60 : x
  2. Step 2: Convert to fraction form
    606,427.40/909,641.10 = 185,648.60/x
  3. Step 3: Cross multiply
    606,427.40x = 909,641.10 × 185,648.60
  4. Step 4: Simplify right side
    606,427.40x = 168,873,596,717.46
  5. Step 5: Solve for x
    x = 168,873,596,717.46/606,427.40
  6. Step 6: Final answer
    x = 278,472.90

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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.