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Finding the Fourth Proportional to 704,208.78, 971,718.99 and 417,672.90

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Solution

The fourth proportional to 704,208.78, 971,718.99 and 417,672.90 is: 576,335.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,208.78 : 971,718.99 = 417,672.90 : x
  2. Step 2: Convert to fraction form
    704,208.78/971,718.99 = 417,672.90/x
  3. Step 3: Cross multiply
    704,208.78x = 971,718.99 × 417,672.90
  4. Step 4: Simplify right side
    704,208.78x = 405,860,688,538.37
  5. Step 5: Solve for x
    x = 405,860,688,538.37/704,208.78
  6. Step 6: Final answer
    x = 576,335.74

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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.