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Finding the Fourth Proportional to 713,455.35, 984,557.16 and 391,168.23

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Solution

The fourth proportional to 713,455.35, 984,557.16 and 391,168.23 is: 539,806.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,455.35 : 984,557.16 = 391,168.23 : x
  2. Step 2: Convert to fraction form
    713,455.35/984,557.16 = 391,168.23/x
  3. Step 3: Cross multiply
    713,455.35x = 984,557.16 × 391,168.23
  4. Step 4: Simplify right side
    713,455.35x = 385,127,481,611.03
  5. Step 5: Solve for x
    x = 385,127,481,611.03/713,455.35
  6. Step 6: Final answer
    x = 539,806.00

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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.