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Finding the Fourth Proportional to 559,161.58, 771,615.57 and 317,411.83

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Solution

The fourth proportional to 559,161.58, 771,615.57 and 317,411.83 is: 438,012.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,161.58 : 771,615.57 = 317,411.83 : x
  2. Step 2: Convert to fraction form
    559,161.58/771,615.57 = 317,411.83/x
  3. Step 3: Cross multiply
    559,161.58x = 771,615.57 × 317,411.83
  4. Step 4: Simplify right side
    559,161.58x = 244,919,910,130.19
  5. Step 5: Solve for x
    x = 244,919,910,130.19/559,161.58
  6. Step 6: Final answer
    x = 438,012.77

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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.