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Finding the Fourth Proportional to 153,156.51, 211,361.49 and 85,180.44

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Solution

The fourth proportional to 153,156.51, 211,361.49 and 85,180.44 is: 117,552.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,156.51 : 211,361.49 = 85,180.44 : x
  2. Step 2: Convert to fraction form
    153,156.51/211,361.49 = 85,180.44/x
  3. Step 3: Cross multiply
    153,156.51x = 211,361.49 × 85,180.44
  4. Step 4: Simplify right side
    153,156.51x = 18,003,864,717.26
  5. Step 5: Solve for x
    x = 18,003,864,717.26/153,156.51
  6. Step 6: Final answer
    x = 117,552.07

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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.