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Finding the Fourth Proportional to 93,394.03, 128,883.13 and 53,107.78

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Solution

The fourth proportional to 93,394.03, 128,883.13 and 53,107.78 is: 73,288.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,394.03 : 128,883.13 = 53,107.78 : x
  2. Step 2: Convert to fraction form
    93,394.03/128,883.13 = 53,107.78/x
  3. Step 3: Cross multiply
    93,394.03x = 128,883.13 × 53,107.78
  4. Step 4: Simplify right side
    93,394.03x = 6,844,696,913.75
  5. Step 5: Solve for x
    x = 6,844,696,913.75/93,394.03
  6. Step 6: Final answer
    x = 73,288.38

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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.