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Finding the Fourth Proportional to 190,601.30, 285,901.95 and 85,625.30

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Solution

The fourth proportional to 190,601.30, 285,901.95 and 85,625.30 is: 128,437.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,601.30 : 285,901.95 = 85,625.30 : x
  2. Step 2: Convert to fraction form
    190,601.30/285,901.95 = 85,625.30/x
  3. Step 3: Cross multiply
    190,601.30x = 285,901.95 × 85,625.30
  4. Step 4: Simplify right side
    190,601.30x = 24,480,440,239.34
  5. Step 5: Solve for x
    x = 24,480,440,239.34/190,601.30
  6. Step 6: Final answer
    x = 128,437.95

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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.