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Finding the Fourth Proportional to 611,740.54, 917,775.65 and 256,659.22

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Solution

The fourth proportional to 611,740.54, 917,775.65 and 256,659.22 is: 385,057.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,740.54 : 917,775.65 = 256,659.22 : x
  2. Step 2: Convert to fraction form
    611,740.54/917,775.65 = 256,659.22/x
  3. Step 3: Cross multiply
    611,740.54x = 917,775.65 × 256,659.22
  4. Step 4: Simplify right side
    611,740.54x = 235,555,582,463.99
  5. Step 5: Solve for x
    x = 235,555,582,463.99/611,740.54
  6. Step 6: Final answer
    x = 385,057.99

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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.