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Finding the Fourth Proportional to 569,411.51, 785,797.20 and 339,988.84

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Solution

The fourth proportional to 569,411.51, 785,797.20 and 339,988.84 is: 469,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,411.51 : 785,797.20 = 339,988.84 : x
  2. Step 2: Convert to fraction form
    569,411.51/785,797.20 = 339,988.84/x
  3. Step 3: Cross multiply
    569,411.51x = 785,797.20 × 339,988.84
  4. Step 4: Simplify right side
    569,411.51x = 267,162,276,538.76
  5. Step 5: Solve for x
    x = 267,162,276,538.76/569,411.51
  6. Step 6: Final answer
    x = 469,190.16

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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.