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Finding the Fourth Proportional to 212,878.40, 293,774.24 and 117,388.48

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Solution

The fourth proportional to 212,878.40, 293,774.24 and 117,388.48 is: 161,997.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,878.40 : 293,774.24 = 117,388.48 : x
  2. Step 2: Convert to fraction form
    212,878.40/293,774.24 = 117,388.48/x
  3. Step 3: Cross multiply
    212,878.40x = 293,774.24 × 117,388.48
  4. Step 4: Simplify right side
    212,878.40x = 34,485,711,496.76
  5. Step 5: Solve for x
    x = 34,485,711,496.76/212,878.40
  6. Step 6: Final answer
    x = 161,997.23

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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.