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Finding the Fourth Proportional to 7,118,953.92, 9,824,096.88 and 3,855,692.88

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Solution

The fourth proportional to 7,118,953.92, 9,824,096.88 and 3,855,692.88 is: 5,320,823.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118,953.92 : 9,824,096.88 = 3,855,692.88 : x
  2. Step 2: Convert to fraction form
    7,118,953.92/9,824,096.88 = 3,855,692.88/x
  3. Step 3: Cross multiply
    7,118,953.92x = 9,824,096.88 × 3,855,692.88
  4. Step 4: Simplify right side
    7,118,953.92x = 37,878,700,392,646.22
  5. Step 5: Solve for x
    x = 37,878,700,392,646.22/7,118,953.92
  6. Step 6: Final answer
    x = 5,320,823.93

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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.