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Finding the Fourth Proportional to 712,579.06, 983,375.03 and 406,649.35

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Solution

The fourth proportional to 712,579.06, 983,375.03 and 406,649.35 is: 561,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,579.06 : 983,375.03 = 406,649.35 : x
  2. Step 2: Convert to fraction form
    712,579.06/983,375.03 = 406,649.35/x
  3. Step 3: Cross multiply
    712,579.06x = 983,375.03 × 406,649.35
  4. Step 4: Simplify right side
    712,579.06x = 399,888,813,470.09
  5. Step 5: Solve for x
    x = 399,888,813,470.09/712,579.06
  6. Step 6: Final answer
    x = 561,185.19

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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.