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Finding the Fourth Proportional to 1,247,524.86, 1,721,594.04 and 688,736.64

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Solution

The fourth proportional to 1,247,524.86, 1,721,594.04 and 688,736.64 is: 950,461.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,524.86 : 1,721,594.04 = 688,736.64 : x
  2. Step 2: Convert to fraction form
    1,247,524.86/1,721,594.04 = 688,736.64/x
  3. Step 3: Cross multiply
    1,247,524.86x = 1,721,594.04 × 688,736.64
  4. Step 4: Simplify right side
    1,247,524.86x = 1,185,724,894,553.63
  5. Step 5: Solve for x
    x = 1,185,724,894,553.63/1,247,524.86
  6. Step 6: Final answer
    x = 950,461.94

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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.