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Finding the Fourth Proportional to 7,866.54, 10,855.80 and 4,329.72

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Solution

The fourth proportional to 7,866.54, 10,855.80 and 4,329.72 is: 5,975.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.54 : 10,855.80 = 4,329.72 : x
  2. Step 2: Convert to fraction form
    7,866.54/10,855.80 = 4,329.72/x
  3. Step 3: Cross multiply
    7,866.54x = 10,855.80 × 4,329.72
  4. Step 4: Simplify right side
    7,866.54x = 47,002,574.38
  5. Step 5: Solve for x
    x = 47,002,574.38/7,866.54
  6. Step 6: Final answer
    x = 5,975.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.