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Finding the Fourth Proportional to 7,955.52, 11,915.10 and 3,798.45

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Solution

The fourth proportional to 7,955.52, 11,915.10 and 3,798.45 is: 5,688.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.52 : 11,915.10 = 3,798.45 : x
  2. Step 2: Convert to fraction form
    7,955.52/11,915.10 = 3,798.45/x
  3. Step 3: Cross multiply
    7,955.52x = 11,915.10 × 3,798.45
  4. Step 4: Simplify right side
    7,955.52x = 45,258,911.60
  5. Step 5: Solve for x
    x = 45,258,911.60/7,955.52
  6. Step 6: Final answer
    x = 5,688.99

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1.5x scale

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.