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Finding the Fourth Proportional to 14,758.92, 20,368.53 and 8,472.51

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Solution

The fourth proportional to 14,758.92, 20,368.53 and 8,472.51 is: 11,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,758.92 : 20,368.53 = 8,472.51 : x
  2. Step 2: Convert to fraction form
    14,758.92/20,368.53 = 8,472.51/x
  3. Step 3: Cross multiply
    14,758.92x = 20,368.53 × 8,472.51
  4. Step 4: Simplify right side
    14,758.92x = 172,572,574.11
  5. Step 5: Solve for x
    x = 172,572,574.11/14,758.92
  6. Step 6: Final answer
    x = 11,692.76

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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.