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Finding the Fourth Proportional to 65,813.77, 98,731.19 and 21,437.11

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Solution

The fourth proportional to 65,813.77, 98,731.19 and 21,437.11 is: 32,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,813.77 : 98,731.19 = 21,437.11 : x
  2. Step 2: Convert to fraction form
    65,813.77/98,731.19 = 21,437.11/x
  3. Step 3: Cross multiply
    65,813.77x = 98,731.19 × 21,437.11
  4. Step 4: Simplify right side
    65,813.77x = 2,116,511,273.28
  5. Step 5: Solve for x
    x = 2,116,511,273.28/65,813.77
  6. Step 6: Final answer
    x = 32,159.09

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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.