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Finding the Fourth Proportional to 70,639.15, 105,955.98 and 23,892.02

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Solution

The fourth proportional to 70,639.15, 105,955.98 and 23,892.02 is: 35,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,639.15 : 105,955.98 = 23,892.02 : x
  2. Step 2: Convert to fraction form
    70,639.15/105,955.98 = 23,892.02/x
  3. Step 3: Cross multiply
    70,639.15x = 105,955.98 × 23,892.02
  4. Step 4: Simplify right side
    70,639.15x = 2,531,502,393.28
  5. Step 5: Solve for x
    x = 2,531,502,393.28/70,639.15
  6. Step 6: Final answer
    x = 35,837.10

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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.