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Finding the Fourth Proportional to 199,574.80, 299,362.20 and 124,779.40

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Solution

The fourth proportional to 199,574.80, 299,362.20 and 124,779.40 is: 187,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,574.80 : 299,362.20 = 124,779.40 : x
  2. Step 2: Convert to fraction form
    199,574.80/299,362.20 = 124,779.40/x
  3. Step 3: Cross multiply
    199,574.80x = 299,362.20 × 124,779.40
  4. Step 4: Simplify right side
    199,574.80x = 37,354,235,698.68
  5. Step 5: Solve for x
    x = 37,354,235,698.68/199,574.80
  6. Step 6: Final answer
    x = 187,169.10

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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.