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Finding the Fourth Proportional to 635,313.51, 877,142.93 and 393,854.13

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Solution

The fourth proportional to 635,313.51, 877,142.93 and 393,854.13 is: 543,773.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,313.51 : 877,142.93 = 393,854.13 : x
  2. Step 2: Convert to fraction form
    635,313.51/877,142.93 = 393,854.13/x
  3. Step 3: Cross multiply
    635,313.51x = 877,142.93 × 393,854.13
  4. Step 4: Simplify right side
    635,313.51x = 345,466,363,611.53
  5. Step 5: Solve for x
    x = 345,466,363,611.53/635,313.51
  6. Step 6: Final answer
    x = 543,773.05

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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.