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Finding the Fourth Proportional to 13,703.76, 20,555.64 and 5,501.52

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Solution

The fourth proportional to 13,703.76, 20,555.64 and 5,501.52 is: 8,252.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.76 : 20,555.64 = 5,501.52 : x
  2. Step 2: Convert to fraction form
    13,703.76/20,555.64 = 5,501.52/x
  3. Step 3: Cross multiply
    13,703.76x = 20,555.64 × 5,501.52
  4. Step 4: Simplify right side
    13,703.76x = 113,087,264.57
  5. Step 5: Solve for x
    x = 113,087,264.57/13,703.76
  6. Step 6: Final answer
    x = 8,252.28

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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.