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Finding the Fourth Proportional to 666,897.38, 920,318.43 and 365,091.38

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Solution

The fourth proportional to 666,897.38, 920,318.43 and 365,091.38 is: 503,826.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,897.38 : 920,318.43 = 365,091.38 : x
  2. Step 2: Convert to fraction form
    666,897.38/920,318.43 = 365,091.38/x
  3. Step 3: Cross multiply
    666,897.38x = 920,318.43 × 365,091.38
  4. Step 4: Simplify right side
    666,897.38x = 336,000,321,046.54
  5. Step 5: Solve for x
    x = 336,000,321,046.54/666,897.38
  6. Step 6: Final answer
    x = 503,826.13

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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.