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Finding the Fourth Proportional to 605,871.40, 910,775.40 and 519,266.20

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Solution

The fourth proportional to 605,871.40, 910,775.40 and 519,266.20 is: 780,586.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,871.40 : 910,775.40 = 519,266.20 : x
  2. Step 2: Convert to fraction form
    605,871.40/910,775.40 = 519,266.20/x
  3. Step 3: Cross multiply
    605,871.40x = 910,775.40 × 519,266.20
  4. Step 4: Simplify right side
    605,871.40x = 472,934,881,011.48
  5. Step 5: Solve for x
    x = 472,934,881,011.48/605,871.40
  6. Step 6: Final answer
    x = 780,586.24

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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.