Home / 65,561.04-98,340.78-18,813.72

Finding the Fourth Proportional to 65,561.04, 98,340.78 and 18,813.72

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Solution

The fourth proportional to 65,561.04, 98,340.78 and 18,813.72 is: 28,220.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,561.04 : 98,340.78 = 18,813.72 : x
  2. Step 2: Convert to fraction form
    65,561.04/98,340.78 = 18,813.72/x
  3. Step 3: Cross multiply
    65,561.04x = 98,340.78 × 18,813.72
  4. Step 4: Simplify right side
    65,561.04x = 1,850,155,899.50
  5. Step 5: Solve for x
    x = 1,850,155,899.50/65,561.04
  6. Step 6: Final answer
    x = 28,220.36

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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.