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Finding the Fourth Proportional to 181,445.78, 250,380.99 and 100,868.40

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Solution

The fourth proportional to 181,445.78, 250,380.99 and 100,868.40 is: 139,190.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,445.78 : 250,380.99 = 100,868.40 : x
  2. Step 2: Convert to fraction form
    181,445.78/250,380.99 = 100,868.40/x
  3. Step 3: Cross multiply
    181,445.78x = 250,380.99 × 100,868.40
  4. Step 4: Simplify right side
    181,445.78x = 25,255,528,599.81
  5. Step 5: Solve for x
    x = 25,255,528,599.81/181,445.78
  6. Step 6: Final answer
    x = 139,190.50

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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.