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Finding the Fourth Proportional to 388,419.68, 536,098.56 and 245,083.16

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Solution

The fourth proportional to 388,419.68, 536,098.56 and 245,083.16 is: 338,264.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,419.68 : 536,098.56 = 245,083.16 : x
  2. Step 2: Convert to fraction form
    388,419.68/536,098.56 = 245,083.16/x
  3. Step 3: Cross multiply
    388,419.68x = 536,098.56 × 245,083.16
  4. Step 4: Simplify right side
    388,419.68x = 131,388,729,156.25
  5. Step 5: Solve for x
    x = 131,388,729,156.25/388,419.68
  6. Step 6: Final answer
    x = 338,264.86

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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.