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Finding the Fourth Proportional to 483,386.40, 724,388.40 and 356,032.80

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Solution

The fourth proportional to 483,386.40, 724,388.40 and 356,032.80 is: 533,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,386.40 : 724,388.40 = 356,032.80 : x
  2. Step 2: Convert to fraction form
    483,386.40/724,388.40 = 356,032.80/x
  3. Step 3: Cross multiply
    483,386.40x = 724,388.40 × 356,032.80
  4. Step 4: Simplify right side
    483,386.40x = 257,906,030,339.52
  5. Step 5: Solve for x
    x = 257,906,030,339.52/483,386.40
  6. Step 6: Final answer
    x = 533,540.10

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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.