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Finding the Fourth Proportional to 507,690.18, 700,641.90 and 292,839.30

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Solution

The fourth proportional to 507,690.18, 700,641.90 and 292,839.30 is: 404,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,690.18 : 700,641.90 = 292,839.30 : x
  2. Step 2: Convert to fraction form
    507,690.18/700,641.90 = 292,839.30/x
  3. Step 3: Cross multiply
    507,690.18x = 700,641.90 × 292,839.30
  4. Step 4: Simplify right side
    507,690.18x = 205,175,483,546.67
  5. Step 5: Solve for x
    x = 205,175,483,546.67/507,690.18
  6. Step 6: Final answer
    x = 404,135.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.