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Finding the Fourth Proportional to 156,898.42, 216,520.59 and 85,279.84

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Solution

The fourth proportional to 156,898.42, 216,520.59 and 85,279.84 is: 117,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,898.42 : 216,520.59 = 85,279.84 : x
  2. Step 2: Convert to fraction form
    156,898.42/216,520.59 = 85,279.84/x
  3. Step 3: Cross multiply
    156,898.42x = 216,520.59 × 85,279.84
  4. Step 4: Simplify right side
    156,898.42x = 18,464,841,050.40
  5. Step 5: Solve for x
    x = 18,464,841,050.40/156,898.42
  6. Step 6: Final answer
    x = 117,686.60

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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.