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Finding the Fourth Proportional to 157,153.86, 216,872.34 and 85,534.42

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Solution

The fourth proportional to 157,153.86, 216,872.34 and 85,534.42 is: 118,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,153.86 : 216,872.34 = 85,534.42 : x
  2. Step 2: Convert to fraction form
    157,153.86/216,872.34 = 85,534.42/x
  3. Step 3: Cross multiply
    157,153.86x = 216,872.34 × 85,534.42
  4. Step 4: Simplify right side
    157,153.86x = 18,550,049,815.94
  5. Step 5: Solve for x
    x = 18,550,049,815.94/157,153.86
  6. Step 6: Final answer
    x = 118,037.51

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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.