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Finding the Fourth Proportional to 403,115.40, 604,673.10 and 359,569.80

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Solution

The fourth proportional to 403,115.40, 604,673.10 and 359,569.80 is: 539,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,115.40 : 604,673.10 = 359,569.80 : x
  2. Step 2: Convert to fraction form
    403,115.40/604,673.10 = 359,569.80/x
  3. Step 3: Cross multiply
    403,115.40x = 604,673.10 × 359,569.80
  4. Step 4: Simplify right side
    403,115.40x = 217,422,185,632.38
  5. Step 5: Solve for x
    x = 217,422,185,632.38/403,115.40
  6. Step 6: Final answer
    x = 539,354.70

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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.