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Finding the Fourth Proportional to 545,116.55, 817,674.83 and 403,398.95

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Solution

The fourth proportional to 545,116.55, 817,674.83 and 403,398.95 is: 605,098.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,116.55 : 817,674.83 = 403,398.95 : x
  2. Step 2: Convert to fraction form
    545,116.55/817,674.83 = 403,398.95/x
  3. Step 3: Cross multiply
    545,116.55x = 817,674.83 × 403,398.95
  4. Step 4: Simplify right side
    545,116.55x = 329,849,165,846.43
  5. Step 5: Solve for x
    x = 329,849,165,846.43/545,116.55
  6. Step 6: Final answer
    x = 605,098.43

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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.