Home / 191,977.55-287,965.10-65,556.80

Finding the Fourth Proportional to 191,977.55, 287,965.10 and 65,556.80

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Solution

The fourth proportional to 191,977.55, 287,965.10 and 65,556.80 is: 98,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,977.55 : 287,965.10 = 65,556.80 : x
  2. Step 2: Convert to fraction form
    191,977.55/287,965.10 = 65,556.80/x
  3. Step 3: Cross multiply
    191,977.55x = 287,965.10 × 65,556.80
  4. Step 4: Simplify right side
    191,977.55x = 18,878,069,191.75
  5. Step 5: Solve for x
    x = 18,878,069,191.75/191,977.55
  6. Step 6: Final answer
    x = 98,334.78

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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.