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Finding the Fourth Proportional to 8,706.65, 12,020.67 and 6,465.89

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Solution

The fourth proportional to 8,706.65, 12,020.67 and 6,465.89 is: 8,927.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.65 : 12,020.67 = 6,465.89 : x
  2. Step 2: Convert to fraction form
    8,706.65/12,020.67 = 6,465.89/x
  3. Step 3: Cross multiply
    8,706.65x = 12,020.67 × 6,465.89
  4. Step 4: Simplify right side
    8,706.65x = 77,724,293.24
  5. Step 5: Solve for x
    x = 77,724,293.24/8,706.65
  6. Step 6: Final answer
    x = 8,927.00

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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.