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Finding the Fourth Proportional to 189,554.95, 284,415.51 and 99,576.82

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Solution

The fourth proportional to 189,554.95, 284,415.51 and 99,576.82 is: 149,408.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,554.95 : 284,415.51 = 99,576.82 : x
  2. Step 2: Convert to fraction form
    189,554.95/284,415.51 = 99,576.82/x
  3. Step 3: Cross multiply
    189,554.95x = 284,415.51 × 99,576.82
  4. Step 4: Simplify right side
    189,554.95x = 28,321,192,044.48
  5. Step 5: Solve for x
    x = 28,321,192,044.48/189,554.95
  6. Step 6: Final answer
    x = 149,408.88

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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.