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Finding the Fourth Proportional to 173,672.90, 260,509.35 and 80,360.90

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Solution

The fourth proportional to 173,672.90, 260,509.35 and 80,360.90 is: 120,541.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,672.90 : 260,509.35 = 80,360.90 : x
  2. Step 2: Convert to fraction form
    173,672.90/260,509.35 = 80,360.90/x
  3. Step 3: Cross multiply
    173,672.90x = 260,509.35 × 80,360.90
  4. Step 4: Simplify right side
    173,672.90x = 20,934,765,824.42
  5. Step 5: Solve for x
    x = 20,934,765,824.42/173,672.90
  6. Step 6: Final answer
    x = 120,541.35

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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.