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Finding the Fourth Proportional to 156,666.66, 216,200.34 and 85,046.64

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Solution

The fourth proportional to 156,666.66, 216,200.34 and 85,046.64 is: 117,364.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,666.66 : 216,200.34 = 85,046.64 : x
  2. Step 2: Convert to fraction form
    156,666.66/216,200.34 = 85,046.64/x
  3. Step 3: Cross multiply
    156,666.66x = 216,200.34 × 85,046.64
  4. Step 4: Simplify right side
    156,666.66x = 18,387,112,483.86
  5. Step 5: Solve for x
    x = 18,387,112,483.86/156,666.66
  6. Step 6: Final answer
    x = 117,364.55

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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.