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Finding the Fourth Proportional to 124,496.92, 171,798.78 and 70,774.48

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Solution

The fourth proportional to 124,496.92, 171,798.78 and 70,774.48 is: 97,664.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,496.92 : 171,798.78 = 70,774.48 : x
  2. Step 2: Convert to fraction form
    124,496.92/171,798.78 = 70,774.48/x
  3. Step 3: Cross multiply
    124,496.92x = 171,798.78 × 70,774.48
  4. Step 4: Simplify right side
    124,496.92x = 12,158,969,319.13
  5. Step 5: Solve for x
    x = 12,158,969,319.13/124,496.92
  6. Step 6: Final answer
    x = 97,664.82

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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.