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Finding the Fourth Proportional to 185,395.36, 277,878.84 and 85,345.78

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Solution

The fourth proportional to 185,395.36, 277,878.84 and 85,345.78 is: 127,920.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,395.36 : 277,878.84 = 85,345.78 : x
  2. Step 2: Convert to fraction form
    185,395.36/277,878.84 = 85,345.78/x
  3. Step 3: Cross multiply
    185,395.36x = 277,878.84 × 85,345.78
  4. Step 4: Simplify right side
    185,395.36x = 23,715,786,345.30
  5. Step 5: Solve for x
    x = 23,715,786,345.30/185,395.36
  6. Step 6: Final answer
    x = 127,920.06

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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.