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Finding the Fourth Proportional to 218,798.16, 328,252.61 and 61,026.62

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Solution

The fourth proportional to 218,798.16, 328,252.61 and 61,026.62 is: 91,555.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,798.16 : 328,252.61 = 61,026.62 : x
  2. Step 2: Convert to fraction form
    218,798.16/328,252.61 = 61,026.62/x
  3. Step 3: Cross multiply
    218,798.16x = 328,252.61 × 61,026.62
  4. Step 4: Simplify right side
    218,798.16x = 20,032,147,294.48
  5. Step 5: Solve for x
    x = 20,032,147,294.48/218,798.16
  6. Step 6: Final answer
    x = 91,555.37

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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.