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Finding the Fourth Proportional to 7,862.61, 11,774.47 and 4,565.71

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Solution

The fourth proportional to 7,862.61, 11,774.47 and 4,565.71 is: 6,837.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,862.61 : 11,774.47 = 4,565.71 : x
  2. Step 2: Convert to fraction form
    7,862.61/11,774.47 = 4,565.71/x
  3. Step 3: Cross multiply
    7,862.61x = 11,774.47 × 4,565.71
  4. Step 4: Simplify right side
    7,862.61x = 53,758,815.42
  5. Step 5: Solve for x
    x = 53,758,815.42/7,862.61
  6. Step 6: Final answer
    x = 6,837.27

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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.