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Finding the Fourth Proportional to 70,428.54, 105,646.08 and 26,047.02

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Solution

The fourth proportional to 70,428.54, 105,646.08 and 26,047.02 is: 39,071.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,428.54 : 105,646.08 = 26,047.02 : x
  2. Step 2: Convert to fraction form
    70,428.54/105,646.08 = 26,047.02/x
  3. Step 3: Cross multiply
    70,428.54x = 105,646.08 × 26,047.02
  4. Step 4: Simplify right side
    70,428.54x = 2,751,765,558.68
  5. Step 5: Solve for x
    x = 2,751,765,558.68/70,428.54
  6. Step 6: Final answer
    x = 39,071.74

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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.