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Finding the Fourth Proportional to 9,675.80, 14,513.70 and 5,787.80

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Solution

The fourth proportional to 9,675.80, 14,513.70 and 5,787.80 is: 8,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,675.80 : 14,513.70 = 5,787.80 : x
  2. Step 2: Convert to fraction form
    9,675.80/14,513.70 = 5,787.80/x
  3. Step 3: Cross multiply
    9,675.80x = 14,513.70 × 5,787.80
  4. Step 4: Simplify right side
    9,675.80x = 84,002,392.86
  5. Step 5: Solve for x
    x = 84,002,392.86/9,675.80
  6. Step 6: Final answer
    x = 8,681.70

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1.5x scale

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.