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Finding the Fourth Proportional to 712,098.66, 982,706.97 and 389,838.75

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Solution

The fourth proportional to 712,098.66, 982,706.97 and 389,838.75 is: 537,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,098.66 : 982,706.97 = 389,838.75 : x
  2. Step 2: Convert to fraction form
    712,098.66/982,706.97 = 389,838.75/x
  3. Step 3: Cross multiply
    712,098.66x = 982,706.97 × 389,838.75
  4. Step 4: Simplify right side
    712,098.66x = 383,097,256,801.09
  5. Step 5: Solve for x
    x = 383,097,256,801.09/712,098.66
  6. Step 6: Final answer
    x = 537,983.40

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1.5x scale

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.