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Finding the Fourth Proportional to 38,366,907.88, 52,946,251.43 and 20,963,377.88

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Solution

The fourth proportional to 38,366,907.88, 52,946,251.43 and 20,963,377.88 is: 28,929,416.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,366,907.88 : 52,946,251.43 = 20,963,377.88 : x
  2. Step 2: Convert to fraction form
    38,366,907.88/52,946,251.43 = 20,963,377.88/x
  3. Step 3: Cross multiply
    38,366,907.88x = 52,946,251.43 × 20,963,377.88
  4. Step 4: Simplify right side
    38,366,907.88x = 1,109,932,276,241,354.38
  5. Step 5: Solve for x
    x = 1,109,932,276,241,354.38/38,366,907.88
  6. Step 6: Final answer
    x = 28,929,416.98

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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.