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Finding the Fourth Proportional to 65,705.80, 92,221.40 and 65,705.80

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Solution

The fourth proportional to 65,705.80, 92,221.40 and 65,705.80 is: 92,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,705.80 : 92,221.40 = 65,705.80 : x
  2. Step 2: Convert to fraction form
    65,705.80/92,221.40 = 65,705.80/x
  3. Step 3: Cross multiply
    65,705.80x = 92,221.40 × 65,705.80
  4. Step 4: Simplify right side
    65,705.80x = 6,059,480,864.12
  5. Step 5: Solve for x
    x = 6,059,480,864.12/65,705.80
  6. Step 6: Final answer
    x = 92,221.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.