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Finding the Fourth Proportional to 65,016.32, 89,721.96 and 35,208.32

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Solution

The fourth proportional to 65,016.32, 89,721.96 and 35,208.32 is: 48,587.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,016.32 : 89,721.96 = 35,208.32 : x
  2. Step 2: Convert to fraction form
    65,016.32/89,721.96 = 35,208.32/x
  3. Step 3: Cross multiply
    65,016.32x = 89,721.96 × 35,208.32
  4. Step 4: Simplify right side
    65,016.32x = 3,158,959,478.71
  5. Step 5: Solve for x
    x = 3,158,959,478.71/65,016.32
  6. Step 6: Final answer
    x = 48,587.18

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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.