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Finding the Fourth Proportional to 712,353.36, 983,049.21 and 385,669.78

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Solution

The fourth proportional to 712,353.36, 983,049.21 and 385,669.78 is: 532,225.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,353.36 : 983,049.21 = 385,669.78 : x
  2. Step 2: Convert to fraction form
    712,353.36/983,049.21 = 385,669.78/x
  3. Step 3: Cross multiply
    712,353.36x = 983,049.21 × 385,669.78
  4. Step 4: Simplify right side
    712,353.36x = 379,132,372,857.08
  5. Step 5: Solve for x
    x = 379,132,372,857.08/712,353.36
  6. Step 6: Final answer
    x = 532,225.15

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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.