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Finding the Fourth Proportional to 619,368.38, 854,235.28 and 511,751.58

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Solution

The fourth proportional to 619,368.38, 854,235.28 and 511,751.58 is: 705,809.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,368.38 : 854,235.28 = 511,751.58 : x
  2. Step 2: Convert to fraction form
    619,368.38/854,235.28 = 511,751.58/x
  3. Step 3: Cross multiply
    619,368.38x = 854,235.28 × 511,751.58
  4. Step 4: Simplify right side
    619,368.38x = 437,156,254,231.74
  5. Step 5: Solve for x
    x = 437,156,254,231.74/619,368.38
  6. Step 6: Final answer
    x = 705,809.77

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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.