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Finding the Fourth Proportional to 2,373.74, 3,561.64 and 988.08

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Solution

The fourth proportional to 2,373.74, 3,561.64 and 988.08 is: 1,482.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,373.74 : 3,561.64 = 988.08 : x
  2. Step 2: Convert to fraction form
    2,373.74/3,561.64 = 988.08/x
  3. Step 3: Cross multiply
    2,373.74x = 3,561.64 × 988.08
  4. Step 4: Simplify right side
    2,373.74x = 3,519,185.25
  5. Step 5: Solve for x
    x = 3,519,185.25/2,373.74
  6. Step 6: Final answer
    x = 1,482.55

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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.