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Finding the Fourth Proportional to 113,785.95, 170,698.95 and 38,888.49

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Solution

The fourth proportional to 113,785.95, 170,698.95 and 38,888.49 is: 58,339.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,785.95 : 170,698.95 = 38,888.49 : x
  2. Step 2: Convert to fraction form
    113,785.95/170,698.95 = 38,888.49/x
  3. Step 3: Cross multiply
    113,785.95x = 170,698.95 × 38,888.49
  4. Step 4: Simplify right side
    113,785.95x = 6,638,224,410.09
  5. Step 5: Solve for x
    x = 6,638,224,410.09/113,785.95
  6. Step 6: Final answer
    x = 58,339.58

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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.