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Finding the Fourth Proportional to 93,210.09, 128,630.07 and 50,768.79

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Solution

The fourth proportional to 93,210.09, 128,630.07 and 50,768.79 is: 70,061.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,210.09 : 128,630.07 = 50,768.79 : x
  2. Step 2: Convert to fraction form
    93,210.09/128,630.07 = 50,768.79/x
  3. Step 3: Cross multiply
    93,210.09x = 128,630.07 × 50,768.79
  4. Step 4: Simplify right side
    93,210.09x = 6,530,393,011.52
  5. Step 5: Solve for x
    x = 6,530,393,011.52/93,210.09
  6. Step 6: Final answer
    x = 70,061.01

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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.