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Finding the Fourth Proportional to 7,218.01, 9,957.90 and 4,860.91

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Solution

The fourth proportional to 7,218.01, 9,957.90 and 4,860.91 is: 6,706.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.01 : 9,957.90 = 4,860.91 : x
  2. Step 2: Convert to fraction form
    7,218.01/9,957.90 = 4,860.91/x
  3. Step 3: Cross multiply
    7,218.01x = 9,957.90 × 4,860.91
  4. Step 4: Simplify right side
    7,218.01x = 48,404,455.69
  5. Step 5: Solve for x
    x = 48,404,455.69/7,218.01
  6. Step 6: Final answer
    x = 6,706.07

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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.