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Finding the Fourth Proportional to 22,950.64, 31,675.12 and 13,393.68

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Solution

The fourth proportional to 22,950.64, 31,675.12 and 13,393.68 is: 18,485.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,950.64 : 31,675.12 = 13,393.68 : x
  2. Step 2: Convert to fraction form
    22,950.64/31,675.12 = 13,393.68/x
  3. Step 3: Cross multiply
    22,950.64x = 31,675.12 × 13,393.68
  4. Step 4: Simplify right side
    22,950.64x = 424,246,421.24
  5. Step 5: Solve for x
    x = 424,246,421.24/22,950.64
  6. Step 6: Final answer
    x = 18,485.17

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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.