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Finding the Fourth Proportional to 403,908.60, 607,175.10 and 346,171.80

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Solution

The fourth proportional to 403,908.60, 607,175.10 and 346,171.80 is: 520,382.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,908.60 : 607,175.10 = 346,171.80 : x
  2. Step 2: Convert to fraction form
    403,908.60/607,175.10 = 346,171.80/x
  3. Step 3: Cross multiply
    403,908.60x = 607,175.10 × 346,171.80
  4. Step 4: Simplify right side
    403,908.60x = 210,186,897,282.18
  5. Step 5: Solve for x
    x = 210,186,897,282.18/403,908.60
  6. Step 6: Final answer
    x = 520,382.33

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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.