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Finding the Fourth Proportional to 113,162.91, 156,099.84 and 70,647.63

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Solution

The fourth proportional to 113,162.91, 156,099.84 and 70,647.63 is: 97,453.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,162.91 : 156,099.84 = 70,647.63 : x
  2. Step 2: Convert to fraction form
    113,162.91/156,099.84 = 70,647.63/x
  3. Step 3: Cross multiply
    113,162.91x = 156,099.84 × 70,647.63
  4. Step 4: Simplify right side
    113,162.91x = 11,028,083,739.38
  5. Step 5: Solve for x
    x = 11,028,083,739.38/113,162.91
  6. Step 6: Final answer
    x = 97,453.16

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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.