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Finding the Fourth Proportional to 93,010.92, 128,356.38 and 50,570.40

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Solution

The fourth proportional to 93,010.92, 128,356.38 and 50,570.40 is: 69,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,010.92 : 128,356.38 = 50,570.40 : x
  2. Step 2: Convert to fraction form
    93,010.92/128,356.38 = 50,570.40/x
  3. Step 3: Cross multiply
    93,010.92x = 128,356.38 × 50,570.40
  4. Step 4: Simplify right side
    93,010.92x = 6,491,033,479.15
  5. Step 5: Solve for x
    x = 6,491,033,479.15/93,010.92
  6. Step 6: Final answer
    x = 69,787.86

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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.