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Finding the Fourth Proportional to 92,218.70, 127,215.84 and 56,346.20

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Solution

The fourth proportional to 92,218.70, 127,215.84 and 56,346.20 is: 77,729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,218.70 : 127,215.84 = 56,346.20 : x
  2. Step 2: Convert to fraction form
    92,218.70/127,215.84 = 56,346.20/x
  3. Step 3: Cross multiply
    92,218.70x = 127,215.84 × 56,346.20
  4. Step 4: Simplify right side
    92,218.70x = 7,168,129,163.81
  5. Step 5: Solve for x
    x = 7,168,129,163.81/92,218.70
  6. Step 6: Final answer
    x = 77,729.67

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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.