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Finding the Fourth Proportional to 403,614.04, 605,106.90 and 261,158.32

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Solution

The fourth proportional to 403,614.04, 605,106.90 and 261,158.32 is: 391,534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,614.04 : 605,106.90 = 261,158.32 : x
  2. Step 2: Convert to fraction form
    403,614.04/605,106.90 = 261,158.32/x
  3. Step 3: Cross multiply
    403,614.04x = 605,106.90 × 261,158.32
  4. Step 4: Simplify right side
    403,614.04x = 158,028,701,424.41
  5. Step 5: Solve for x
    x = 158,028,701,424.41/403,614.04
  6. Step 6: Final answer
    x = 391,534.20

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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.