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Finding the Fourth Proportional to 13,007.63, 17,950.57 and 7,039.29

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Solution

The fourth proportional to 13,007.63, 17,950.57 and 7,039.29 is: 9,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,007.63 : 17,950.57 = 7,039.29 : x
  2. Step 2: Convert to fraction form
    13,007.63/17,950.57 = 7,039.29/x
  3. Step 3: Cross multiply
    13,007.63x = 17,950.57 × 7,039.29
  4. Step 4: Simplify right side
    13,007.63x = 126,359,341.86
  5. Step 5: Solve for x
    x = 126,359,341.86/13,007.63
  6. Step 6: Final answer
    x = 9,714.25

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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.