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Finding the Fourth Proportional to 373,928.80, 560,294.16 and 196,428.64

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Solution

The fourth proportional to 373,928.80, 560,294.16 and 196,428.64 is: 294,328.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,928.80 : 560,294.16 = 196,428.64 : x
  2. Step 2: Convert to fraction form
    373,928.80/560,294.16 = 196,428.64/x
  3. Step 3: Cross multiply
    373,928.80x = 560,294.16 × 196,428.64
  4. Step 4: Simplify right side
    373,928.80x = 110,057,819,848.74
  5. Step 5: Solve for x
    x = 110,057,819,848.74/373,928.80
  6. Step 6: Final answer
    x = 294,328.28

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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.