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Finding the Fourth Proportional to 713,616.44, 984,804.20 and 391,307.31

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Solution

The fourth proportional to 713,616.44, 984,804.20 and 391,307.31 is: 540,011.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,616.44 : 984,804.20 = 391,307.31 : x
  2. Step 2: Convert to fraction form
    713,616.44/984,804.20 = 391,307.31/x
  3. Step 3: Cross multiply
    713,616.44x = 984,804.20 × 391,307.31
  4. Step 4: Simplify right side
    713,616.44x = 385,361,082,378.70
  5. Step 5: Solve for x
    x = 385,361,082,378.70/713,616.44
  6. Step 6: Final answer
    x = 540,011.50

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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.