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Finding the Fourth Proportional to 578,352.15, 867,429.81 and 157,529.61

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Solution

The fourth proportional to 578,352.15, 867,429.81 and 157,529.61 is: 236,267.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,352.15 : 867,429.81 = 157,529.61 : x
  2. Step 2: Convert to fraction form
    578,352.15/867,429.81 = 157,529.61/x
  3. Step 3: Cross multiply
    578,352.15x = 867,429.81 × 157,529.61
  4. Step 4: Simplify right side
    578,352.15x = 136,645,879,671.67
  5. Step 5: Solve for x
    x = 136,645,879,671.67/578,352.15
  6. Step 6: Final answer
    x = 236,267.61

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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.