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Finding the Fourth Proportional to 22,572.99, 31,143.06 and 13,012.57

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Solution

The fourth proportional to 22,572.99, 31,143.06 and 13,012.57 is: 17,952.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,572.99 : 31,143.06 = 13,012.57 : x
  2. Step 2: Convert to fraction form
    22,572.99/31,143.06 = 13,012.57/x
  3. Step 3: Cross multiply
    22,572.99x = 31,143.06 × 13,012.57
  4. Step 4: Simplify right side
    22,572.99x = 405,251,248.26
  5. Step 5: Solve for x
    x = 405,251,248.26/22,572.99
  6. Step 6: Final answer
    x = 17,952.93

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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.