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Finding the Fourth Proportional to 118,468.77, 163,487.22 and 70,721.09

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Solution

The fourth proportional to 118,468.77, 163,487.22 and 70,721.09 is: 97,595.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,468.77 : 163,487.22 = 70,721.09 : x
  2. Step 2: Convert to fraction form
    118,468.77/163,487.22 = 70,721.09/x
  3. Step 3: Cross multiply
    118,468.77x = 163,487.22 × 70,721.09
  4. Step 4: Simplify right side
    118,468.77x = 11,561,994,399.47
  5. Step 5: Solve for x
    x = 11,561,994,399.47/118,468.77
  6. Step 6: Final answer
    x = 97,595.29

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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.