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Finding the Fourth Proportional to 611,799.92, 917,654.52 and 256,799.60

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Solution

The fourth proportional to 611,799.92, 917,654.52 and 256,799.60 is: 385,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,799.92 : 917,654.52 = 256,799.60 : x
  2. Step 2: Convert to fraction form
    611,799.92/917,654.52 = 256,799.60/x
  3. Step 3: Cross multiply
    611,799.92x = 917,654.52 × 256,799.60
  4. Step 4: Simplify right side
    611,799.92x = 235,653,313,674.19
  5. Step 5: Solve for x
    x = 235,653,313,674.19/611,799.92
  6. Step 6: Final answer
    x = 385,180.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.