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Finding the Fourth Proportional to 14,369.92, 19,828.20 and 8,703.70

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Solution

The fourth proportional to 14,369.92, 19,828.20 and 8,703.70 is: 12,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,369.92 : 19,828.20 = 8,703.70 : x
  2. Step 2: Convert to fraction form
    14,369.92/19,828.20 = 8,703.70/x
  3. Step 3: Cross multiply
    14,369.92x = 19,828.20 × 8,703.70
  4. Step 4: Simplify right side
    14,369.92x = 172,578,704.34
  5. Step 5: Solve for x
    x = 172,578,704.34/14,369.92
  6. Step 6: Final answer
    x = 12,009.72

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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.