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Finding the Fourth Proportional to 544,489.83, 816,773.63 and 145,128.51

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Solution

The fourth proportional to 544,489.83, 816,773.63 and 145,128.51 is: 217,703.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,489.83 : 816,773.63 = 145,128.51 : x
  2. Step 2: Convert to fraction form
    544,489.83/816,773.63 = 145,128.51/x
  3. Step 3: Cross multiply
    544,489.83x = 816,773.63 × 145,128.51
  4. Step 4: Simplify right side
    544,489.83x = 118,537,139,203.55
  5. Step 5: Solve for x
    x = 118,537,139,203.55/544,489.83
  6. Step 6: Final answer
    x = 217,703.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.