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Finding the Fourth Proportional to 469,335.33, 647,574.26 and 316,656.77

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Solution

The fourth proportional to 469,335.33, 647,574.26 and 316,656.77 is: 436,913.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,335.33 : 647,574.26 = 316,656.77 : x
  2. Step 2: Convert to fraction form
    469,335.33/647,574.26 = 316,656.77/x
  3. Step 3: Cross multiply
    469,335.33x = 647,574.26 × 316,656.77
  4. Step 4: Simplify right side
    469,335.33x = 205,058,768,685.59
  5. Step 5: Solve for x
    x = 205,058,768,685.59/469,335.33
  6. Step 6: Final answer
    x = 436,913.13

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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.