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Finding the Fourth Proportional to 236,871.70, 355,307.55 and 143,559.70

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Solution

The fourth proportional to 236,871.70, 355,307.55 and 143,559.70 is: 215,339.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,871.70 : 355,307.55 = 143,559.70 : x
  2. Step 2: Convert to fraction form
    236,871.70/355,307.55 = 143,559.70/x
  3. Step 3: Cross multiply
    236,871.70x = 355,307.55 × 143,559.70
  4. Step 4: Simplify right side
    236,871.70x = 51,007,845,285.74
  5. Step 5: Solve for x
    x = 51,007,845,285.74/236,871.70
  6. Step 6: Final answer
    x = 215,339.55

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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.