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Finding the Fourth Proportional to 619,484.38, 855,188.79 and 415,460.68

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Solution

The fourth proportional to 619,484.38, 855,188.79 and 415,460.68 is: 573,537.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,484.38 : 855,188.79 = 415,460.68 : x
  2. Step 2: Convert to fraction form
    619,484.38/855,188.79 = 415,460.68/x
  3. Step 3: Cross multiply
    619,484.38x = 855,188.79 × 415,460.68
  4. Step 4: Simplify right side
    619,484.38x = 355,297,316,221.78
  5. Step 5: Solve for x
    x = 355,297,316,221.78/619,484.38
  6. Step 6: Final answer
    x = 573,537.17

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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.