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Finding the Fourth Proportional to 181,017.80, 249,816.30 and 100,445.54

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Solution

The fourth proportional to 181,017.80, 249,816.30 and 100,445.54 is: 138,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,017.80 : 249,816.30 = 100,445.54 : x
  2. Step 2: Convert to fraction form
    181,017.80/249,816.30 = 100,445.54/x
  3. Step 3: Cross multiply
    181,017.80x = 249,816.30 × 100,445.54
  4. Step 4: Simplify right side
    181,017.80x = 25,092,932,093.56
  5. Step 5: Solve for x
    x = 25,092,932,093.56/181,017.80
  6. Step 6: Final answer
    x = 138,621.35

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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.