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Finding the Fourth Proportional to 7,192.32, 9,929.28 and 4,838.52

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Solution

The fourth proportional to 7,192.32, 9,929.28 and 4,838.52 is: 6,679.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.32 : 9,929.28 = 4,838.52 : x
  2. Step 2: Convert to fraction form
    7,192.32/9,929.28 = 4,838.52/x
  3. Step 3: Cross multiply
    7,192.32x = 9,929.28 × 4,838.52
  4. Step 4: Simplify right side
    7,192.32x = 48,043,019.87
  5. Step 5: Solve for x
    x = 48,043,019.87/7,192.32
  6. Step 6: Final answer
    x = 6,679.77

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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.