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Finding the Fourth Proportional to 218,713.88, 328,070.84 and 52,501.88

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Solution

The fourth proportional to 218,713.88, 328,070.84 and 52,501.88 is: 78,752.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,713.88 : 328,070.84 = 52,501.88 : x
  2. Step 2: Convert to fraction form
    218,713.88/328,070.84 = 52,501.88/x
  3. Step 3: Cross multiply
    218,713.88x = 328,070.84 × 52,501.88
  4. Step 4: Simplify right side
    218,713.88x = 17,224,335,873.18
  5. Step 5: Solve for x
    x = 17,224,335,873.18/218,713.88
  6. Step 6: Final answer
    x = 78,752.82

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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.