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Finding the Fourth Proportional to 7,237,309.80, 10,855,964.70 and 7,125,335.40

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Solution

The fourth proportional to 7,237,309.80, 10,855,964.70 and 7,125,335.40 is: 10,688,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,237,309.80 : 10,855,964.70 = 7,125,335.40 : x
  2. Step 2: Convert to fraction form
    7,237,309.80/10,855,964.70 = 7,125,335.40/x
  3. Step 3: Cross multiply
    7,237,309.80x = 10,855,964.70 × 7,125,335.40
  4. Step 4: Simplify right side
    7,237,309.80x = 77,352,389,578,060.38
  5. Step 5: Solve for x
    x = 77,352,389,578,060.38/7,237,309.80
  6. Step 6: Final answer
    x = 10,688,003.10

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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.