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Finding the Fourth Proportional to 713,410.95, 984,506.79 and 391,114.11

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Solution

The fourth proportional to 713,410.95, 984,506.79 and 391,114.11 is: 539,737.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,410.95 : 984,506.79 = 391,114.11 : x
  2. Step 2: Convert to fraction form
    713,410.95/984,506.79 = 391,114.11/x
  3. Step 3: Cross multiply
    713,410.95x = 984,506.79 × 391,114.11
  4. Step 4: Simplify right side
    713,410.95x = 385,054,496,959.81
  5. Step 5: Solve for x
    x = 385,054,496,959.81/713,410.95
  6. Step 6: Final answer
    x = 539,737.30

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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.