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Finding the Fourth Proportional to 611,093.50, 916,665.09 and 291,080.86

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Solution

The fourth proportional to 611,093.50, 916,665.09 and 291,080.86 is: 436,633.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,093.50 : 916,665.09 = 291,080.86 : x
  2. Step 2: Convert to fraction form
    611,093.50/916,665.09 = 291,080.86/x
  3. Step 3: Cross multiply
    611,093.50x = 916,665.09 × 291,080.86
  4. Step 4: Simplify right side
    611,093.50x = 266,823,662,729.18
  5. Step 5: Solve for x
    x = 266,823,662,729.18/611,093.50
  6. Step 6: Final answer
    x = 436,633.12

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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.