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Finding the Fourth Proportional to 8,700.95, 12,007.31 and 4,722.03

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Solution

The fourth proportional to 8,700.95, 12,007.31 and 4,722.03 is: 6,516.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.95 : 12,007.31 = 4,722.03 : x
  2. Step 2: Convert to fraction form
    8,700.95/12,007.31 = 4,722.03/x
  3. Step 3: Cross multiply
    8,700.95x = 12,007.31 × 4,722.03
  4. Step 4: Simplify right side
    8,700.95x = 56,698,854.43
  5. Step 5: Solve for x
    x = 56,698,854.43/8,700.95
  6. Step 6: Final answer
    x = 6,516.40

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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.