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Finding the Fourth Proportional to 9,894,628.80, 14,841,943.20 and 4,855,780.80

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Solution

The fourth proportional to 9,894,628.80, 14,841,943.20 and 4,855,780.80 is: 7,283,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,894,628.80 : 14,841,943.20 = 4,855,780.80 : x
  2. Step 2: Convert to fraction form
    9,894,628.80/14,841,943.20 = 4,855,780.80/x
  3. Step 3: Cross multiply
    9,894,628.80x = 14,841,943.20 × 4,855,780.80
  4. Step 4: Simplify right side
    9,894,628.80x = 72,069,222,825,250.55
  5. Step 5: Solve for x
    x = 72,069,222,825,250.55/9,894,628.80
  6. Step 6: Final answer
    x = 7,283,671.20

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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.