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Finding the Fourth Proportional to 161,658.86, 223,096.15 and 90,038.90

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Solution

The fourth proportional to 161,658.86, 223,096.15 and 90,038.90 is: 124,257.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,658.86 : 223,096.15 = 90,038.90 : x
  2. Step 2: Convert to fraction form
    161,658.86/223,096.15 = 90,038.90/x
  3. Step 3: Cross multiply
    161,658.86x = 223,096.15 × 90,038.90
  4. Step 4: Simplify right side
    161,658.86x = 20,087,331,940.24
  5. Step 5: Solve for x
    x = 20,087,331,940.24/161,658.86
  6. Step 6: Final answer
    x = 124,257.54

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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.