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Finding the Fourth Proportional to 1,234,723.10, 1,703,583.50 and 847,656.90

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Solution

The fourth proportional to 1,234,723.10, 1,703,583.50 and 847,656.90 is: 1,169,536.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,723.10 : 1,703,583.50 = 847,656.90 : x
  2. Step 2: Convert to fraction form
    1,234,723.10/1,703,583.50 = 847,656.90/x
  3. Step 3: Cross multiply
    1,234,723.10x = 1,703,583.50 × 847,656.90
  4. Step 4: Simplify right side
    1,234,723.10x = 1,444,054,304,262.87
  5. Step 5: Solve for x
    x = 1,444,054,304,262.87/1,234,723.10
  6. Step 6: Final answer
    x = 1,169,536.97

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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.