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Finding the Fourth Proportional to 189,681.76, 261,738.52 and 104,793.76

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Solution

The fourth proportional to 189,681.76, 261,738.52 and 104,793.76 is: 144,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,681.76 : 261,738.52 = 104,793.76 : x
  2. Step 2: Convert to fraction form
    189,681.76/261,738.52 = 104,793.76/x
  3. Step 3: Cross multiply
    189,681.76x = 261,738.52 × 104,793.76
  4. Step 4: Simplify right side
    189,681.76x = 27,428,563,647.64
  5. Step 5: Solve for x
    x = 27,428,563,647.64/189,681.76
  6. Step 6: Final answer
    x = 144,603.06

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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.