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Finding the Fourth Proportional to 712,641.54, 983,440.44 and 385,947.03

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Solution

The fourth proportional to 712,641.54, 983,440.44 and 385,947.03 is: 532,604.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,641.54 : 983,440.44 = 385,947.03 : x
  2. Step 2: Convert to fraction form
    712,641.54/983,440.44 = 385,947.03/x
  3. Step 3: Cross multiply
    712,641.54x = 983,440.44 × 385,947.03
  4. Step 4: Simplify right side
    712,641.54x = 379,555,915,155.94
  5. Step 5: Solve for x
    x = 379,555,915,155.94/712,641.54
  6. Step 6: Final answer
    x = 532,604.25

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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.