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Finding the Fourth Proportional to 10,641.94, 15,955.50 and 4,715.61

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Solution

The fourth proportional to 10,641.94, 15,955.50 and 4,715.61 is: 7,070.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.94 : 15,955.50 = 4,715.61 : x
  2. Step 2: Convert to fraction form
    10,641.94/15,955.50 = 4,715.61/x
  3. Step 3: Cross multiply
    10,641.94x = 15,955.50 × 4,715.61
  4. Step 4: Simplify right side
    10,641.94x = 75,239,915.36
  5. Step 5: Solve for x
    x = 75,239,915.36/10,641.94
  6. Step 6: Final answer
    x = 7,070.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.