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Finding the Fourth Proportional to 372,543.10, 514,095.19 and 211,388.54

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Solution

The fourth proportional to 372,543.10, 514,095.19 and 211,388.54 is: 291,708.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,543.10 : 514,095.19 = 211,388.54 : x
  2. Step 2: Convert to fraction form
    372,543.10/514,095.19 = 211,388.54/x
  3. Step 3: Cross multiply
    372,543.10x = 514,095.19 × 211,388.54
  4. Step 4: Simplify right side
    372,543.10x = 108,673,828,536.18
  5. Step 5: Solve for x
    x = 108,673,828,536.18/372,543.10
  6. Step 6: Final answer
    x = 291,708.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.