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Finding the Fourth Proportional to 528,838.45, 793,572.88 and 191,905.39

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Solution

The fourth proportional to 528,838.45, 793,572.88 and 191,905.39 is: 287,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,838.45 : 793,572.88 = 191,905.39 : x
  2. Step 2: Convert to fraction form
    528,838.45/793,572.88 = 191,905.39/x
  3. Step 3: Cross multiply
    528,838.45x = 793,572.88 × 191,905.39
  4. Step 4: Simplify right side
    528,838.45x = 152,290,913,029.82
  5. Step 5: Solve for x
    x = 152,290,913,029.82/528,838.45
  6. Step 6: Final answer
    x = 287,972.47

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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.