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Finding the Fourth Proportional to 189,937.67, 285,003.71 and 77,700.83

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Solution

The fourth proportional to 189,937.67, 285,003.71 and 77,700.83 is: 116,591.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,937.67 : 285,003.71 = 77,700.83 : x
  2. Step 2: Convert to fraction form
    189,937.67/285,003.71 = 77,700.83/x
  3. Step 3: Cross multiply
    189,937.67x = 285,003.71 × 77,700.83
  4. Step 4: Simplify right side
    189,937.67x = 22,145,024,820.08
  5. Step 5: Solve for x
    x = 22,145,024,820.08/189,937.67
  6. Step 6: Final answer
    x = 116,591.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.