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Finding the Fourth Proportional to 93,398.76, 128,889.86 and 50,957.16

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Solution

The fourth proportional to 93,398.76, 128,889.86 and 50,957.16 is: 70,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,398.76 : 128,889.86 = 50,957.16 : x
  2. Step 2: Convert to fraction form
    93,398.76/128,889.86 = 50,957.16/x
  3. Step 3: Cross multiply
    93,398.76x = 128,889.86 × 50,957.16
  4. Step 4: Simplify right side
    93,398.76x = 6,567,861,218.40
  5. Step 5: Solve for x
    x = 6,567,861,218.40/93,398.76
  6. Step 6: Final answer
    x = 70,320.65

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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.