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Finding the Fourth Proportional to 261,800.01, 392,735.25 and 84,264.21

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Solution

The fourth proportional to 261,800.01, 392,735.25 and 84,264.21 is: 126,407.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,800.01 : 392,735.25 = 84,264.21 : x
  2. Step 2: Convert to fraction form
    261,800.01/392,735.25 = 84,264.21/x
  3. Step 3: Cross multiply
    261,800.01x = 392,735.25 × 84,264.21
  4. Step 4: Simplify right side
    261,800.01x = 33,093,525,580.40
  5. Step 5: Solve for x
    x = 33,093,525,580.40/261,800.01
  6. Step 6: Final answer
    x = 126,407.66

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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.