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Finding the Fourth Proportional to 666,616.96, 919,934.40 and 364,810.24

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Solution

The fourth proportional to 666,616.96, 919,934.40 and 364,810.24 is: 503,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,616.96 : 919,934.40 = 364,810.24 : x
  2. Step 2: Convert to fraction form
    666,616.96/919,934.40 = 364,810.24/x
  3. Step 3: Cross multiply
    666,616.96x = 919,934.40 × 364,810.24
  4. Step 4: Simplify right side
    666,616.96x = 335,601,489,248.26
  5. Step 5: Solve for x
    x = 335,601,489,248.26/666,616.96
  6. Step 6: Final answer
    x = 503,439.77

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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.