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Finding the Fourth Proportional to 761,657.88, 1,051,509.04 and 680,891.98

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Solution

The fourth proportional to 761,657.88, 1,051,509.04 and 680,891.98 is: 940,007.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,657.88 : 1,051,509.04 = 680,891.98 : x
  2. Step 2: Convert to fraction form
    761,657.88/1,051,509.04 = 680,891.98/x
  3. Step 3: Cross multiply
    761,657.88x = 1,051,509.04 × 680,891.98
  4. Step 4: Simplify right side
    761,657.88x = 715,964,072,233.50
  5. Step 5: Solve for x
    x = 715,964,072,233.50/761,657.88
  6. Step 6: Final answer
    x = 940,007.44

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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.