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Finding the Fourth Proportional to 14,675.61, 20,245.65 and 8,703.89

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Solution

The fourth proportional to 14,675.61, 20,245.65 and 8,703.89 is: 12,007.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,675.61 : 20,245.65 = 8,703.89 : x
  2. Step 2: Convert to fraction form
    14,675.61/20,245.65 = 8,703.89/x
  3. Step 3: Cross multiply
    14,675.61x = 20,245.65 × 8,703.89
  4. Step 4: Simplify right side
    14,675.61x = 176,215,852.63
  5. Step 5: Solve for x
    x = 176,215,852.63/14,675.61
  6. Step 6: Final answer
    x = 12,007.39

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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.