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Finding the Fourth Proportional to 93,207.34, 128,642.82 and 54,964.58

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Solution

The fourth proportional to 93,207.34, 128,642.82 and 54,964.58 is: 75,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,207.34 : 128,642.82 = 54,964.58 : x
  2. Step 2: Convert to fraction form
    93,207.34/128,642.82 = 54,964.58/x
  3. Step 3: Cross multiply
    93,207.34x = 128,642.82 × 54,964.58
  4. Step 4: Simplify right side
    93,207.34x = 7,070,797,721.98
  5. Step 5: Solve for x
    x = 7,070,797,721.98/93,207.34
  6. Step 6: Final answer
    x = 75,860.95

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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.