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Finding the Fourth Proportional to 76,510.62, 105,539.67 and 53,882.46

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Solution

The fourth proportional to 76,510.62, 105,539.67 and 53,882.46 is: 74,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,510.62 : 105,539.67 = 53,882.46 : x
  2. Step 2: Convert to fraction form
    76,510.62/105,539.67 = 53,882.46/x
  3. Step 3: Cross multiply
    76,510.62x = 105,539.67 × 53,882.46
  4. Step 4: Simplify right side
    76,510.62x = 5,686,737,047.19
  5. Step 5: Solve for x
    x = 5,686,737,047.19/76,510.62
  6. Step 6: Final answer
    x = 74,326.11

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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.