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Finding the Fourth Proportional to 51,915.76, 77,873.64 and 14,474.32

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Solution

The fourth proportional to 51,915.76, 77,873.64 and 14,474.32 is: 21,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,915.76 : 77,873.64 = 14,474.32 : x
  2. Step 2: Convert to fraction form
    51,915.76/77,873.64 = 14,474.32/x
  3. Step 3: Cross multiply
    51,915.76x = 77,873.64 × 14,474.32
  4. Step 4: Simplify right side
    51,915.76x = 1,127,167,984.92
  5. Step 5: Solve for x
    x = 1,127,167,984.92/51,915.76
  6. Step 6: Final answer
    x = 21,711.48

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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.