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Finding the Fourth Proportional to 107,018.94, 147,673.80 and 61,696.56

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Solution

The fourth proportional to 107,018.94, 147,673.80 and 61,696.56 is: 85,134.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,018.94 : 147,673.80 = 61,696.56 : x
  2. Step 2: Convert to fraction form
    107,018.94/147,673.80 = 61,696.56/x
  3. Step 3: Cross multiply
    107,018.94x = 147,673.80 × 61,696.56
  4. Step 4: Simplify right side
    107,018.94x = 9,110,965,462.13
  5. Step 5: Solve for x
    x = 9,110,965,462.13/107,018.94
  6. Step 6: Final answer
    x = 85,134.14

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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.