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Finding the Fourth Proportional to 157,779.92, 236,494.53 and 120,216.12

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Solution

The fourth proportional to 157,779.92, 236,494.53 and 120,216.12 is: 180,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,779.92 : 236,494.53 = 120,216.12 : x
  2. Step 2: Convert to fraction form
    157,779.92/236,494.53 = 120,216.12/x
  3. Step 3: Cross multiply
    157,779.92x = 236,494.53 × 120,216.12
  4. Step 4: Simplify right side
    157,779.92x = 28,430,454,797.82
  5. Step 5: Solve for x
    x = 28,430,454,797.82/157,779.92
  6. Step 6: Final answer
    x = 180,190.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.