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Finding the Fourth Proportional to 93,255.80, 128,642.46 and 55,522.76

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Solution

The fourth proportional to 93,255.80, 128,642.46 and 55,522.76 is: 76,591.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,255.80 : 128,642.46 = 55,522.76 : x
  2. Step 2: Convert to fraction form
    93,255.80/128,642.46 = 55,522.76/x
  3. Step 3: Cross multiply
    93,255.80x = 128,642.46 × 55,522.76
  4. Step 4: Simplify right side
    93,255.80x = 7,142,584,432.39
  5. Step 5: Solve for x
    x = 7,142,584,432.39/93,255.80
  6. Step 6: Final answer
    x = 76,591.32

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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.