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Finding the Fourth Proportional to 630,373.25, 869,915.09 and 404,018.75

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Solution

The fourth proportional to 630,373.25, 869,915.09 and 404,018.75 is: 557,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,373.25 : 869,915.09 = 404,018.75 : x
  2. Step 2: Convert to fraction form
    630,373.25/869,915.09 = 404,018.75/x
  3. Step 3: Cross multiply
    630,373.25x = 869,915.09 × 404,018.75
  4. Step 4: Simplify right side
    630,373.25x = 351,462,007,267.94
  5. Step 5: Solve for x
    x = 351,462,007,267.94/630,373.25
  6. Step 6: Final answer
    x = 557,545.88

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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.