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Finding the Fourth Proportional to 666,888.28, 920,305.86 and 365,082.28

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Solution

The fourth proportional to 666,888.28, 920,305.86 and 365,082.28 is: 503,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,888.28 : 920,305.86 = 365,082.28 : x
  2. Step 2: Convert to fraction form
    666,888.28/920,305.86 = 365,082.28/x
  3. Step 3: Cross multiply
    666,888.28x = 920,305.86 × 365,082.28
  4. Step 4: Simplify right side
    666,888.28x = 335,987,361,666.16
  5. Step 5: Solve for x
    x = 335,987,361,666.16/666,888.28
  6. Step 6: Final answer
    x = 503,813.56

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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.