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Finding the Fourth Proportional to 712,792.80, 983,645.84 and 386,099.64

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Solution

The fourth proportional to 712,792.80, 983,645.84 and 386,099.64 is: 532,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,792.80 : 983,645.84 = 386,099.64 : x
  2. Step 2: Convert to fraction form
    712,792.80/983,645.84 = 386,099.64/x
  3. Step 3: Cross multiply
    712,792.80x = 983,645.84 × 386,099.64
  4. Step 4: Simplify right side
    712,792.80x = 379,785,302,781.00
  5. Step 5: Solve for x
    x = 379,785,302,781.00/712,792.80
  6. Step 6: Final answer
    x = 532,813.05

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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.