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Finding the Fourth Proportional to 614,776.40, 921,180.45 and 404,168.30

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Solution

The fourth proportional to 614,776.40, 921,180.45 and 404,168.30 is: 605,605.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,776.40 : 921,180.45 = 404,168.30 : x
  2. Step 2: Convert to fraction form
    614,776.40/921,180.45 = 404,168.30/x
  3. Step 3: Cross multiply
    614,776.40x = 921,180.45 × 404,168.30
  4. Step 4: Simplify right side
    614,776.40x = 372,311,936,469.74
  5. Step 5: Solve for x
    x = 372,311,936,469.74/614,776.40
  6. Step 6: Final answer
    x = 605,605.45

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1.5x scale

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.