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Finding the Fourth Proportional to 7,665.76, 10,579.07 and 4,308.57

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Solution

The fourth proportional to 7,665.76, 10,579.07 and 4,308.57 is: 5,946.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,665.76 : 10,579.07 = 4,308.57 : x
  2. Step 2: Convert to fraction form
    7,665.76/10,579.07 = 4,308.57/x
  3. Step 3: Cross multiply
    7,665.76x = 10,579.07 × 4,308.57
  4. Step 4: Simplify right side
    7,665.76x = 45,580,663.63
  5. Step 5: Solve for x
    x = 45,580,663.63/7,665.76
  6. Step 6: Final answer
    x = 5,946.01

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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.