Home / 66,485.20-99,678.20-40,184.40

Finding the Fourth Proportional to 66,485.20, 99,678.20 and 40,184.40

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Solution

The fourth proportional to 66,485.20, 99,678.20 and 40,184.40 is: 60,246.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.20 : 99,678.20 = 40,184.40 : x
  2. Step 2: Convert to fraction form
    66,485.20/99,678.20 = 40,184.40/x
  3. Step 3: Cross multiply
    66,485.20x = 99,678.20 × 40,184.40
  4. Step 4: Simplify right side
    66,485.20x = 4,005,508,660.08
  5. Step 5: Solve for x
    x = 4,005,508,660.08/66,485.20
  6. Step 6: Final answer
    x = 60,246.62

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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.