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Finding the Fourth Proportional to 93,154.36, 128,552.36 and 50,712.78

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Solution

The fourth proportional to 93,154.36, 128,552.36 and 50,712.78 is: 69,983.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,154.36 : 128,552.36 = 50,712.78 : x
  2. Step 2: Convert to fraction form
    93,154.36/128,552.36 = 50,712.78/x
  3. Step 3: Cross multiply
    93,154.36x = 128,552.36 × 50,712.78
  4. Step 4: Simplify right side
    93,154.36x = 6,519,247,551.16
  5. Step 5: Solve for x
    x = 6,519,247,551.16/93,154.36
  6. Step 6: Final answer
    x = 69,983.28

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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.