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Finding the Fourth Proportional to 156,670.65, 216,204.21 and 85,050.54

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Solution

The fourth proportional to 156,670.65, 216,204.21 and 85,050.54 is: 117,369.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,670.65 : 216,204.21 = 85,050.54 : x
  2. Step 2: Convert to fraction form
    156,670.65/216,204.21 = 85,050.54/x
  3. Step 3: Cross multiply
    156,670.65x = 216,204.21 × 85,050.54
  4. Step 4: Simplify right side
    156,670.65x = 18,388,284,810.77
  5. Step 5: Solve for x
    x = 18,388,284,810.77/156,670.65
  6. Step 6: Final answer
    x = 117,369.05

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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.