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Finding the Fourth Proportional to 458,528.40, 687,792.60 and 403,232.40

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Solution

The fourth proportional to 458,528.40, 687,792.60 and 403,232.40 is: 604,848.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,528.40 : 687,792.60 = 403,232.40 : x
  2. Step 2: Convert to fraction form
    458,528.40/687,792.60 = 403,232.40/x
  3. Step 3: Cross multiply
    458,528.40x = 687,792.60 × 403,232.40
  4. Step 4: Simplify right side
    458,528.40x = 277,340,260,800.24
  5. Step 5: Solve for x
    x = 277,340,260,800.24/458,528.40
  6. Step 6: Final answer
    x = 604,848.60

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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.