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Finding the Fourth Proportional to 218,756.54, 328,153.33 and 60,985.14

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Solution

The fourth proportional to 218,756.54, 328,153.33 and 60,985.14 is: 91,482.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,756.54 : 328,153.33 = 60,985.14 : x
  2. Step 2: Convert to fraction form
    218,756.54/328,153.33 = 60,985.14/x
  3. Step 3: Cross multiply
    218,756.54x = 328,153.33 × 60,985.14
  4. Step 4: Simplify right side
    218,756.54x = 20,012,476,771.52
  5. Step 5: Solve for x
    x = 20,012,476,771.52/218,756.54
  6. Step 6: Final answer
    x = 91,482.88

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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.