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Finding the Fourth Proportional to 93,393.40, 128,882.28 and 53,107.17

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Solution

The fourth proportional to 93,393.40, 128,882.28 and 53,107.17 is: 73,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,393.40 : 128,882.28 = 53,107.17 : x
  2. Step 2: Convert to fraction form
    93,393.40/128,882.28 = 53,107.17/x
  3. Step 3: Cross multiply
    93,393.40x = 128,882.28 × 53,107.17
  4. Step 4: Simplify right side
    93,393.40x = 6,844,573,153.95
  5. Step 5: Solve for x
    x = 6,844,573,153.95/93,393.40
  6. Step 6: Final answer
    x = 73,287.55

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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.