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Finding the Fourth Proportional to 911,663.76, 1,257,893.91 and 524,455.41

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Solution

The fourth proportional to 911,663.76, 1,257,893.91 and 524,455.41 is: 723,632.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,663.76 : 1,257,893.91 = 524,455.41 : x
  2. Step 2: Convert to fraction form
    911,663.76/1,257,893.91 = 524,455.41/x
  3. Step 3: Cross multiply
    911,663.76x = 1,257,893.91 × 524,455.41
  4. Step 4: Simplify right side
    911,663.76x = 659,709,266,305.55
  5. Step 5: Solve for x
    x = 659,709,266,305.55/911,663.76
  6. Step 6: Final answer
    x = 723,632.22

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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.