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Finding the Fourth Proportional to 118,166.16, 163,065.24 and 70,394.70

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Solution

The fourth proportional to 118,166.16, 163,065.24 and 70,394.70 is: 97,142.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,166.16 : 163,065.24 = 70,394.70 : x
  2. Step 2: Convert to fraction form
    118,166.16/163,065.24 = 70,394.70/x
  3. Step 3: Cross multiply
    118,166.16x = 163,065.24 × 70,394.70
  4. Step 4: Simplify right side
    118,166.16x = 11,478,928,650.23
  5. Step 5: Solve for x
    x = 11,478,928,650.23/118,166.16
  6. Step 6: Final answer
    x = 97,142.27

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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.