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Finding the Fourth Proportional to 156,897.83, 216,520.32 and 85,277.84

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Solution

The fourth proportional to 156,897.83, 216,520.32 and 85,277.84 is: 117,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,897.83 : 216,520.32 = 85,277.84 : x
  2. Step 2: Convert to fraction form
    156,897.83/216,520.32 = 85,277.84/x
  3. Step 3: Cross multiply
    156,897.83x = 216,520.32 × 85,277.84
  4. Step 4: Simplify right side
    156,897.83x = 18,464,384,123.11
  5. Step 5: Solve for x
    x = 18,464,384,123.11/156,897.83
  6. Step 6: Final answer
    x = 117,684.13

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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.