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Finding the Fourth Proportional to 93,203.12, 128,621.76 and 50,761.61

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Solution

The fourth proportional to 93,203.12, 128,621.76 and 50,761.61 is: 70,051.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,203.12 : 128,621.76 = 50,761.61 : x
  2. Step 2: Convert to fraction form
    93,203.12/128,621.76 = 50,761.61/x
  3. Step 3: Cross multiply
    93,203.12x = 128,621.76 × 50,761.61
  4. Step 4: Simplify right side
    93,203.12x = 6,529,047,618.63
  5. Step 5: Solve for x
    x = 6,529,047,618.63/93,203.12
  6. Step 6: Final answer
    x = 70,051.81

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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.