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Finding the Fourth Proportional to 702,502.40, 1,052,198.40 and 578,086.40

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Solution

The fourth proportional to 702,502.40, 1,052,198.40 and 578,086.40 is: 865,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,502.40 : 1,052,198.40 = 578,086.40 : x
  2. Step 2: Convert to fraction form
    702,502.40/1,052,198.40 = 578,086.40/x
  3. Step 3: Cross multiply
    702,502.40x = 1,052,198.40 × 578,086.40
  4. Step 4: Simplify right side
    702,502.40x = 608,261,585,141.76
  5. Step 5: Solve for x
    x = 608,261,585,141.76/702,502.40
  6. Step 6: Final answer
    x = 865,849.83

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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.