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Finding the Fourth Proportional to 70,927.63, 97,879.54 and 38,661.66

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Solution

The fourth proportional to 70,927.63, 97,879.54 and 38,661.66 is: 53,352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,927.63 : 97,879.54 = 38,661.66 : x
  2. Step 2: Convert to fraction form
    70,927.63/97,879.54 = 38,661.66/x
  3. Step 3: Cross multiply
    70,927.63x = 97,879.54 × 38,661.66
  4. Step 4: Simplify right side
    70,927.63x = 3,784,185,910.66
  5. Step 5: Solve for x
    x = 3,784,185,910.66/70,927.63
  6. Step 6: Final answer
    x = 53,352.77

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1.5x scale

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.