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Finding the Fourth Proportional to 7,029.69, 9,700.74 and 4,043.49

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Solution

The fourth proportional to 7,029.69, 9,700.74 and 4,043.49 is: 5,579.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,029.69 : 9,700.74 = 4,043.49 : x
  2. Step 2: Convert to fraction form
    7,029.69/9,700.74 = 4,043.49/x
  3. Step 3: Cross multiply
    7,029.69x = 9,700.74 × 4,043.49
  4. Step 4: Simplify right side
    7,029.69x = 39,224,845.18
  5. Step 5: Solve for x
    x = 39,224,845.18/7,029.69
  6. Step 6: Final answer
    x = 5,579.88

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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.