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Finding the Fourth Proportional to 31,505.63, 43,477.90 and 17,358.17

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Solution

The fourth proportional to 31,505.63, 43,477.90 and 17,358.17 is: 23,954.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,505.63 : 43,477.90 = 17,358.17 : x
  2. Step 2: Convert to fraction form
    31,505.63/43,477.90 = 17,358.17/x
  3. Step 3: Cross multiply
    31,505.63x = 43,477.90 × 17,358.17
  4. Step 4: Simplify right side
    31,505.63x = 754,696,518.66
  5. Step 5: Solve for x
    x = 754,696,518.66/31,505.63
  6. Step 6: Final answer
    x = 23,954.34

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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.