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Finding the Fourth Proportional to 157,018.34, 216,694.17 and 85,396.93

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Solution

The fourth proportional to 157,018.34, 216,694.17 and 85,396.93 is: 117,852.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,018.34 : 216,694.17 = 85,396.93 : x
  2. Step 2: Convert to fraction form
    157,018.34/216,694.17 = 85,396.93/x
  3. Step 3: Cross multiply
    157,018.34x = 216,694.17 × 85,396.93
  4. Step 4: Simplify right side
    157,018.34x = 18,505,016,325.16
  5. Step 5: Solve for x
    x = 18,505,016,325.16/157,018.34
  6. Step 6: Final answer
    x = 117,852.58

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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.