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Finding the Fourth Proportional to 156,655.85, 216,187.31 and 85,036.01

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Solution

The fourth proportional to 156,655.85, 216,187.31 and 85,036.01 is: 117,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,655.85 : 216,187.31 = 85,036.01 : x
  2. Step 2: Convert to fraction form
    156,655.85/216,187.31 = 85,036.01/x
  3. Step 3: Cross multiply
    156,655.85x = 216,187.31 × 85,036.01
  4. Step 4: Simplify right side
    156,655.85x = 18,383,705,386.69
  5. Step 5: Solve for x
    x = 18,383,705,386.69/156,655.85
  6. Step 6: Final answer
    x = 117,350.91

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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.