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Finding the Fourth Proportional to 156,685.77, 216,239.75 and 88,714.72

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Solution

The fourth proportional to 156,685.77, 216,239.75 and 88,714.72 is: 122,433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,685.77 : 216,239.75 = 88,714.72 : x
  2. Step 2: Convert to fraction form
    156,685.77/216,239.75 = 88,714.72/x
  3. Step 3: Cross multiply
    156,685.77x = 216,239.75 × 88,714.72
  4. Step 4: Simplify right side
    156,685.77x = 19,183,648,700.85
  5. Step 5: Solve for x
    x = 19,183,648,700.85/156,685.77
  6. Step 6: Final answer
    x = 122,433.89

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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.