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Finding the Fourth Proportional to 612,415.89, 844,861.19 and 357,654.69

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Solution

The fourth proportional to 612,415.89, 844,861.19 and 357,654.69 is: 493,404.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,415.89 : 844,861.19 = 357,654.69 : x
  2. Step 2: Convert to fraction form
    612,415.89/844,861.19 = 357,654.69/x
  3. Step 3: Cross multiply
    612,415.89x = 844,861.19 × 357,654.69
  4. Step 4: Simplify right side
    612,415.89x = 302,168,565,214.21
  5. Step 5: Solve for x
    x = 302,168,565,214.21/612,415.89
  6. Step 6: Final answer
    x = 493,404.19

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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.