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Finding the Fourth Proportional to 102,585.80, 153,878.70 and 36,036.20

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Solution

The fourth proportional to 102,585.80, 153,878.70 and 36,036.20 is: 54,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,585.80 : 153,878.70 = 36,036.20 : x
  2. Step 2: Convert to fraction form
    102,585.80/153,878.70 = 36,036.20/x
  3. Step 3: Cross multiply
    102,585.80x = 153,878.70 × 36,036.20
  4. Step 4: Simplify right side
    102,585.80x = 5,545,203,608.94
  5. Step 5: Solve for x
    x = 5,545,203,608.94/102,585.80
  6. Step 6: Final answer
    x = 54,054.30

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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.