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Finding the Fourth Proportional to 107,886.84, 148,877.49 and 61,935.74

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Solution

The fourth proportional to 107,886.84, 148,877.49 and 61,935.74 is: 85,467.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,886.84 : 148,877.49 = 61,935.74 : x
  2. Step 2: Convert to fraction form
    107,886.84/148,877.49 = 61,935.74/x
  3. Step 3: Cross multiply
    107,886.84x = 148,877.49 × 61,935.74
  4. Step 4: Simplify right side
    107,886.84x = 9,220,837,558.65
  5. Step 5: Solve for x
    x = 9,220,837,558.65/107,886.84
  6. Step 6: Final answer
    x = 85,467.68

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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.