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Finding the Fourth Proportional to 93,086.36, 128,460.05 and 55,353.32

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Solution

The fourth proportional to 93,086.36, 128,460.05 and 55,353.32 is: 76,388.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,086.36 : 128,460.05 = 55,353.32 : x
  2. Step 2: Convert to fraction form
    93,086.36/128,460.05 = 55,353.32/x
  3. Step 3: Cross multiply
    93,086.36x = 128,460.05 × 55,353.32
  4. Step 4: Simplify right side
    93,086.36x = 7,110,690,254.87
  5. Step 5: Solve for x
    x = 7,110,690,254.87/93,086.36
  6. Step 6: Final answer
    x = 76,388.10

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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.