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Finding the Fourth Proportional to 93,478.25, 128,984.77 and 55,232.48

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Solution

The fourth proportional to 93,478.25, 128,984.77 and 55,232.48 is: 76,211.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,478.25 : 128,984.77 = 55,232.48 : x
  2. Step 2: Convert to fraction form
    93,478.25/128,984.77 = 55,232.48/x
  3. Step 3: Cross multiply
    93,478.25x = 128,984.77 × 55,232.48
  4. Step 4: Simplify right side
    93,478.25x = 7,124,149,120.83
  5. Step 5: Solve for x
    x = 7,124,149,120.83/93,478.25
  6. Step 6: Final answer
    x = 76,211.83

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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.