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Finding the Fourth Proportional to 611,365.76, 916,753.68 and 256,284.44

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Solution

The fourth proportional to 611,365.76, 916,753.68 and 256,284.44 is: 384,303.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,365.76 : 916,753.68 = 256,284.44 : x
  2. Step 2: Convert to fraction form
    611,365.76/916,753.68 = 256,284.44/x
  3. Step 3: Cross multiply
    611,365.76x = 916,753.68 × 256,284.44
  4. Step 4: Simplify right side
    611,365.76x = 234,949,698,912.97
  5. Step 5: Solve for x
    x = 234,949,698,912.97/611,365.76
  6. Step 6: Final answer
    x = 384,303.01

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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.