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Finding the Fourth Proportional to 7,661.47, 10,572.47 and 4,258.32

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Solution

The fourth proportional to 7,661.47, 10,572.47 and 4,258.32 is: 5,876.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.47 : 10,572.47 = 4,258.32 : x
  2. Step 2: Convert to fraction form
    7,661.47/10,572.47 = 4,258.32/x
  3. Step 3: Cross multiply
    7,661.47x = 10,572.47 × 4,258.32
  4. Step 4: Simplify right side
    7,661.47x = 45,020,960.45
  5. Step 5: Solve for x
    x = 45,020,960.45/7,661.47
  6. Step 6: Final answer
    x = 5,876.28

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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.