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Finding the Fourth Proportional to 92,570.82, 127,748.14 and 50,129.40

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Solution

The fourth proportional to 92,570.82, 127,748.14 and 50,129.40 is: 69,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,570.82 : 127,748.14 = 50,129.40 : x
  2. Step 2: Convert to fraction form
    92,570.82/127,748.14 = 50,129.40/x
  3. Step 3: Cross multiply
    92,570.82x = 127,748.14 × 50,129.40
  4. Step 4: Simplify right side
    92,570.82x = 6,403,937,609.32
  5. Step 5: Solve for x
    x = 6,403,937,609.32/92,570.82
  6. Step 6: Final answer
    x = 69,178.79

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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.