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Finding the Fourth Proportional to 624,581.76, 861,709.52 and 406,690.64

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Solution

The fourth proportional to 624,581.76, 861,709.52 and 406,690.64 is: 561,094.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,581.76 : 861,709.52 = 406,690.64 : x
  2. Step 2: Convert to fraction form
    624,581.76/861,709.52 = 406,690.64/x
  3. Step 3: Cross multiply
    624,581.76x = 861,709.52 × 406,690.64
  4. Step 4: Simplify right side
    624,581.76x = 350,449,196,182.89
  5. Step 5: Solve for x
    x = 350,449,196,182.89/624,581.76
  6. Step 6: Final answer
    x = 561,094.19

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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.