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Finding the Fourth Proportional to 101,817.39, 140,505.85 and 56,494.40

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Solution

The fourth proportional to 101,817.39, 140,505.85 and 56,494.40 is: 77,961.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,817.39 : 140,505.85 = 56,494.40 : x
  2. Step 2: Convert to fraction form
    101,817.39/140,505.85 = 56,494.40/x
  3. Step 3: Cross multiply
    101,817.39x = 140,505.85 × 56,494.40
  4. Step 4: Simplify right side
    101,817.39x = 7,937,793,692.24
  5. Step 5: Solve for x
    x = 7,937,793,692.24/101,817.39
  6. Step 6: Final answer
    x = 77,961.08

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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.