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Finding the Fourth Proportional to 93,422.97, 128,923.72 and 53,144.55

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Solution

The fourth proportional to 93,422.97, 128,923.72 and 53,144.55 is: 73,339.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,422.97 : 128,923.72 = 53,144.55 : x
  2. Step 2: Convert to fraction form
    93,422.97/128,923.72 = 53,144.55/x
  3. Step 3: Cross multiply
    93,422.97x = 128,923.72 × 53,144.55
  4. Step 4: Simplify right side
    93,422.97x = 6,851,592,950.86
  5. Step 5: Solve for x
    x = 6,851,592,950.86/93,422.97
  6. Step 6: Final answer
    x = 73,339.49

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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.