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Finding the Fourth Proportional to 93,144.96, 128,540.12 and 50,703.57

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Solution

The fourth proportional to 93,144.96, 128,540.12 and 50,703.57 is: 69,970.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,144.96 : 128,540.12 = 50,703.57 : x
  2. Step 2: Convert to fraction form
    93,144.96/128,540.12 = 50,703.57/x
  3. Step 3: Cross multiply
    93,144.96x = 128,540.12 × 50,703.57
  4. Step 4: Simplify right side
    93,144.96x = 6,517,442,718.71
  5. Step 5: Solve for x
    x = 6,517,442,718.71/93,144.96
  6. Step 6: Final answer
    x = 69,970.96

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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.