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Finding the Fourth Proportional to 140,775.65, 194,223.89 and 86,307.65

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Solution

The fourth proportional to 140,775.65, 194,223.89 and 86,307.65 is: 119,076.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,775.65 : 194,223.89 = 86,307.65 : x
  2. Step 2: Convert to fraction form
    140,775.65/194,223.89 = 86,307.65/x
  3. Step 3: Cross multiply
    140,775.65x = 194,223.89 × 86,307.65
  4. Step 4: Simplify right side
    140,775.65x = 16,763,007,088.22
  5. Step 5: Solve for x
    x = 16,763,007,088.22/140,775.65
  6. Step 6: Final answer
    x = 119,076.04

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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.