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Finding the Fourth Proportional to 118,560.78, 163,593.27 and 70,811.28

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Solution

The fourth proportional to 118,560.78, 163,593.27 and 70,811.28 is: 97,707.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,560.78 : 163,593.27 = 70,811.28 : x
  2. Step 2: Convert to fraction form
    118,560.78/163,593.27 = 70,811.28/x
  3. Step 3: Cross multiply
    118,560.78x = 163,593.27 × 70,811.28
  4. Step 4: Simplify right side
    118,560.78x = 11,584,248,848.09
  5. Step 5: Solve for x
    x = 11,584,248,848.09/118,560.78
  6. Step 6: Final answer
    x = 97,707.26

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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.