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Finding the Fourth Proportional to 372,457.92, 514,593.28 and 259,783.68

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Solution

The fourth proportional to 372,457.92, 514,593.28 and 259,783.68 is: 358,920.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,457.92 : 514,593.28 = 259,783.68 : x
  2. Step 2: Convert to fraction form
    372,457.92/514,593.28 = 259,783.68/x
  3. Step 3: Cross multiply
    372,457.92x = 514,593.28 × 259,783.68
  4. Step 4: Simplify right side
    372,457.92x = 133,682,935,981.67
  5. Step 5: Solve for x
    x = 133,682,935,981.67/372,457.92
  6. Step 6: Final answer
    x = 358,920.91

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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.