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Finding the Fourth Proportional to 210,543.47, 315,721.39 and 60,748.14

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Solution

The fourth proportional to 210,543.47, 315,721.39 and 60,748.14 is: 91,095.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,543.47 : 315,721.39 = 60,748.14 : x
  2. Step 2: Convert to fraction form
    210,543.47/315,721.39 = 60,748.14/x
  3. Step 3: Cross multiply
    210,543.47x = 315,721.39 × 60,748.14
  4. Step 4: Simplify right side
    210,543.47x = 19,179,487,200.71
  5. Step 5: Solve for x
    x = 19,179,487,200.71/210,543.47
  6. Step 6: Final answer
    x = 91,095.14

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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.