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Finding the Fourth Proportional to 482,783.30, 724,866.15 and 272,831.30

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Solution

The fourth proportional to 482,783.30, 724,866.15 and 272,831.30 is: 409,637.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,783.30 : 724,866.15 = 272,831.30 : x
  2. Step 2: Convert to fraction form
    482,783.30/724,866.15 = 272,831.30/x
  3. Step 3: Cross multiply
    482,783.30x = 724,866.15 × 272,831.30
  4. Step 4: Simplify right side
    482,783.30x = 197,766,174,030.50
  5. Step 5: Solve for x
    x = 197,766,174,030.50/482,783.30
  6. Step 6: Final answer
    x = 409,637.56

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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.