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Finding the Fourth Proportional to 553,860.10, 830,196.87 and 395,608.42

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Solution

The fourth proportional to 553,860.10, 830,196.87 and 395,608.42 is: 592,988.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,860.10 : 830,196.87 = 395,608.42 : x
  2. Step 2: Convert to fraction form
    553,860.10/830,196.87 = 395,608.42/x
  3. Step 3: Cross multiply
    553,860.10x = 830,196.87 × 395,608.42
  4. Step 4: Simplify right side
    553,860.10x = 328,432,872,029.65
  5. Step 5: Solve for x
    x = 328,432,872,029.65/553,860.10
  6. Step 6: Final answer
    x = 592,988.86

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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.