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Finding the Fourth Proportional to 236,312.84, 354,604.13 and 86,533.31

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Solution

The fourth proportional to 236,312.84, 354,604.13 and 86,533.31 is: 129,849.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,312.84 : 354,604.13 = 86,533.31 : x
  2. Step 2: Convert to fraction form
    236,312.84/354,604.13 = 86,533.31/x
  3. Step 3: Cross multiply
    236,312.84x = 354,604.13 × 86,533.31
  4. Step 4: Simplify right side
    236,312.84x = 30,685,069,886.91
  5. Step 5: Solve for x
    x = 30,685,069,886.91/236,312.84
  6. Step 6: Final answer
    x = 129,849.35

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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.