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Finding the Fourth Proportional to 93,285.84, 128,731.20 and 50,843.52

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Solution

The fourth proportional to 93,285.84, 128,731.20 and 50,843.52 is: 70,162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,285.84 : 128,731.20 = 50,843.52 : x
  2. Step 2: Convert to fraction form
    93,285.84/128,731.20 = 50,843.52/x
  3. Step 3: Cross multiply
    93,285.84x = 128,731.20 × 50,843.52
  4. Step 4: Simplify right side
    93,285.84x = 6,545,147,341.82
  5. Step 5: Solve for x
    x = 6,545,147,341.82/93,285.84
  6. Step 6: Final answer
    x = 70,162.28

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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.