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Finding the Fourth Proportional to 14,895.30, 20,556 and 8,607.69

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Solution

The fourth proportional to 14,895.30, 20,556 and 8,607.69 is: 11,878.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,895.30 : 20,556 = 8,607.69 : x
  2. Step 2: Convert to fraction form
    14,895.30/20,556 = 8,607.69/x
  3. Step 3: Cross multiply
    14,895.30x = 20,556 × 8,607.69
  4. Step 4: Simplify right side
    14,895.30x = 176,939,675.64
  5. Step 5: Solve for x
    x = 176,939,675.64/14,895.30
  6. Step 6: Final answer
    x = 11,878.89

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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.