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Finding the Fourth Proportional to 102,055.38, 153,085.95 and 28,183.38

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Solution

The fourth proportional to 102,055.38, 153,085.95 and 28,183.38 is: 42,275.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,055.38 : 153,085.95 = 28,183.38 : x
  2. Step 2: Convert to fraction form
    102,055.38/153,085.95 = 28,183.38/x
  3. Step 3: Cross multiply
    102,055.38x = 153,085.95 × 28,183.38
  4. Step 4: Simplify right side
    102,055.38x = 4,314,479,501.51
  5. Step 5: Solve for x
    x = 4,314,479,501.51/102,055.38
  6. Step 6: Final answer
    x = 42,275.87

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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.