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Finding the Fourth Proportional to 10,584.40, 15,862.20 and 7,064.40

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Solution

The fourth proportional to 10,584.40, 15,862.20 and 7,064.40 is: 10,586.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,584.40 : 15,862.20 = 7,064.40 : x
  2. Step 2: Convert to fraction form
    10,584.40/15,862.20 = 7,064.40/x
  3. Step 3: Cross multiply
    10,584.40x = 15,862.20 × 7,064.40
  4. Step 4: Simplify right side
    10,584.40x = 112,056,925.68
  5. Step 5: Solve for x
    x = 112,056,925.68/10,584.40
  6. Step 6: Final answer
    x = 10,586.99

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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.