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Finding the Fourth Proportional to 156,801.62, 216,386.42 and 85,181.63

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Solution

The fourth proportional to 156,801.62, 216,386.42 and 85,181.63 is: 117,550.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,801.62 : 216,386.42 = 85,181.63 : x
  2. Step 2: Convert to fraction form
    156,801.62/216,386.42 = 85,181.63/x
  3. Step 3: Cross multiply
    156,801.62x = 216,386.42 × 85,181.63
  4. Step 4: Simplify right side
    156,801.62x = 18,432,146,457.62
  5. Step 5: Solve for x
    x = 18,432,146,457.62/156,801.62
  6. Step 6: Final answer
    x = 117,550.74

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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.