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Finding the Fourth Proportional to 65,852.92, 98,801.57 and 20,881.63

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Solution

The fourth proportional to 65,852.92, 98,801.57 and 20,881.63 is: 31,329.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,852.92 : 98,801.57 = 20,881.63 : x
  2. Step 2: Convert to fraction form
    65,852.92/98,801.57 = 20,881.63/x
  3. Step 3: Cross multiply
    65,852.92x = 98,801.57 × 20,881.63
  4. Step 4: Simplify right side
    65,852.92x = 2,063,137,828.16
  5. Step 5: Solve for x
    x = 2,063,137,828.16/65,852.92
  6. Step 6: Final answer
    x = 31,329.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.