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Finding the Fourth Proportional to 156,962.80, 216,606.11 and 85,344.63

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Solution

The fourth proportional to 156,962.80, 216,606.11 and 85,344.63 is: 117,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,962.80 : 216,606.11 = 85,344.63 : x
  2. Step 2: Convert to fraction form
    156,962.80/216,606.11 = 85,344.63/x
  3. Step 3: Cross multiply
    156,962.80x = 216,606.11 × 85,344.63
  4. Step 4: Simplify right side
    156,962.80x = 18,486,168,313.69
  5. Step 5: Solve for x
    x = 18,486,168,313.69/156,962.80
  6. Step 6: Final answer
    x = 117,774.20

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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.