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Finding the Fourth Proportional to 93,940.72, 129,635.51 and 53,653.65

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Solution

The fourth proportional to 93,940.72, 129,635.51 and 53,653.65 is: 74,040.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,940.72 : 129,635.51 = 53,653.65 : x
  2. Step 2: Convert to fraction form
    93,940.72/129,635.51 = 53,653.65/x
  3. Step 3: Cross multiply
    93,940.72x = 129,635.51 × 53,653.65
  4. Step 4: Simplify right side
    93,940.72x = 6,955,418,281.11
  5. Step 5: Solve for x
    x = 6,955,418,281.11/93,940.72
  6. Step 6: Final answer
    x = 74,040.50

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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.