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Finding the Fourth Proportional to 140,549.94, 193,955.49 and 86,123.30

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Solution

The fourth proportional to 140,549.94, 193,955.49 and 86,123.30 is: 118,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,549.94 : 193,955.49 = 86,123.30 : x
  2. Step 2: Convert to fraction form
    140,549.94/193,955.49 = 86,123.30/x
  3. Step 3: Cross multiply
    140,549.94x = 193,955.49 × 86,123.30
  4. Step 4: Simplify right side
    140,549.94x = 16,704,085,882.14
  5. Step 5: Solve for x
    x = 16,704,085,882.14/140,549.94
  6. Step 6: Final answer
    x = 118,848.05

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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.