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Finding the Fourth Proportional to 112,423, 168,330.38 and 70,201.96

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Solution

The fourth proportional to 112,423, 168,330.38 and 70,201.96 is: 105,113.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,423 : 168,330.38 = 70,201.96 : x
  2. Step 2: Convert to fraction form
    112,423/168,330.38 = 70,201.96/x
  3. Step 3: Cross multiply
    112,423x = 168,330.38 × 70,201.96
  4. Step 4: Simplify right side
    112,423x = 11,817,122,603.54
  5. Step 5: Solve for x
    x = 11,817,122,603.54/112,423
  6. Step 6: Final answer
    x = 105,113.03

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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.