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Finding the Fourth Proportional to 68,718.81, 102,930.12 and 46,409.52

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Solution

The fourth proportional to 68,718.81, 102,930.12 and 46,409.52 is: 69,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,718.81 : 102,930.12 = 46,409.52 : x
  2. Step 2: Convert to fraction form
    68,718.81/102,930.12 = 46,409.52/x
  3. Step 3: Cross multiply
    68,718.81x = 102,930.12 × 46,409.52
  4. Step 4: Simplify right side
    68,718.81x = 4,776,937,462.74
  5. Step 5: Solve for x
    x = 4,776,937,462.74/68,718.81
  6. Step 6: Final answer
    x = 69,514.26

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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.