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Finding the Fourth Proportional to 519,315.48, 716,688.54 and 292,878.36

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Solution

The fourth proportional to 519,315.48, 716,688.54 and 292,878.36 is: 404,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,315.48 : 716,688.54 = 292,878.36 : x
  2. Step 2: Convert to fraction form
    519,315.48/716,688.54 = 292,878.36/x
  3. Step 3: Cross multiply
    519,315.48x = 716,688.54 × 292,878.36
  4. Step 4: Simplify right side
    519,315.48x = 209,902,564,225.99
  5. Step 5: Solve for x
    x = 209,902,564,225.99/519,315.48
  6. Step 6: Final answer
    x = 404,190.85

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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.