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Finding the Fourth Proportional to 156,637.98, 216,161.15 and 85,018.01

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Solution

The fourth proportional to 156,637.98, 216,161.15 and 85,018.01 is: 117,325.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,637.98 : 216,161.15 = 85,018.01 : x
  2. Step 2: Convert to fraction form
    156,637.98/216,161.15 = 85,018.01/x
  3. Step 3: Cross multiply
    156,637.98x = 216,161.15 × 85,018.01
  4. Step 4: Simplify right side
    156,637.98x = 18,377,589,306.42
  5. Step 5: Solve for x
    x = 18,377,589,306.42/156,637.98
  6. Step 6: Final answer
    x = 117,325.24

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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.