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Finding the Fourth Proportional to 25,630,929.72, 38,448,730.56 and 8,354,696.20

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Solution

The fourth proportional to 25,630,929.72, 38,448,730.56 and 8,354,696.20 is: 12,532,805.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,630,929.72 : 38,448,730.56 = 8,354,696.20 : x
  2. Step 2: Convert to fraction form
    25,630,929.72/38,448,730.56 = 8,354,696.20/x
  3. Step 3: Cross multiply
    25,630,929.72x = 38,448,730.56 × 8,354,696.20
  4. Step 4: Simplify right side
    25,630,929.72x = 321,227,463,104,455.88
  5. Step 5: Solve for x
    x = 321,227,463,104,455.88/25,630,929.72
  6. Step 6: Final answer
    x = 12,532,805.74

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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.