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Finding the Fourth Proportional to 403,217.40, 604,826.10 and 341,009.40

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Solution

The fourth proportional to 403,217.40, 604,826.10 and 341,009.40 is: 511,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,217.40 : 604,826.10 = 341,009.40 : x
  2. Step 2: Convert to fraction form
    403,217.40/604,826.10 = 341,009.40/x
  3. Step 3: Cross multiply
    403,217.40x = 604,826.10 × 341,009.40
  4. Step 4: Simplify right side
    403,217.40x = 206,251,385,465.34
  5. Step 5: Solve for x
    x = 206,251,385,465.34/403,217.40
  6. Step 6: Final answer
    x = 511,514.10

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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.