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Finding the Fourth Proportional to 713,463.60, 984,568.59 and 391,176.48

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Solution

The fourth proportional to 713,463.60, 984,568.59 and 391,176.48 is: 539,817.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,463.60 : 984,568.59 = 391,176.48 : x
  2. Step 2: Convert to fraction form
    713,463.60/984,568.59 = 391,176.48/x
  3. Step 3: Cross multiply
    713,463.60x = 984,568.59 × 391,176.48
  4. Step 4: Simplify right side
    713,463.60x = 385,140,075,354.76
  5. Step 5: Solve for x
    x = 385,140,075,354.76/713,463.60
  6. Step 6: Final answer
    x = 539,817.41

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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.