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Finding the Fourth Proportional to 578,426.69, 867,614.47 and 157,702.61

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Solution

The fourth proportional to 578,426.69, 867,614.47 and 157,702.61 is: 236,546.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,426.69 : 867,614.47 = 157,702.61 : x
  2. Step 2: Convert to fraction form
    578,426.69/867,614.47 = 157,702.61/x
  3. Step 3: Cross multiply
    578,426.69x = 867,614.47 × 157,702.61
  4. Step 4: Simplify right side
    578,426.69x = 136,825,066,392.77
  5. Step 5: Solve for x
    x = 136,825,066,392.77/578,426.69
  6. Step 6: Final answer
    x = 236,546.94

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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.