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Finding the Fourth Proportional to 67,959.59, 93,777.37 and 39,681.68

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Solution

The fourth proportional to 67,959.59, 93,777.37 and 39,681.68 is: 54,756.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,959.59 : 93,777.37 = 39,681.68 : x
  2. Step 2: Convert to fraction form
    67,959.59/93,777.37 = 39,681.68/x
  3. Step 3: Cross multiply
    67,959.59x = 93,777.37 × 39,681.68
  4. Step 4: Simplify right side
    67,959.59x = 3,721,243,587.58
  5. Step 5: Solve for x
    x = 3,721,243,587.58/67,959.59
  6. Step 6: Final answer
    x = 54,756.71

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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.