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Finding the Fourth Proportional to 403,792.60, 605,032.80 and 336,870.40

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Solution

The fourth proportional to 403,792.60, 605,032.80 and 336,870.40 is: 504,758.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,792.60 : 605,032.80 = 336,870.40 : x
  2. Step 2: Convert to fraction form
    403,792.60/605,032.80 = 336,870.40/x
  3. Step 3: Cross multiply
    403,792.60x = 605,032.80 × 336,870.40
  4. Step 4: Simplify right side
    403,792.60x = 203,817,641,349.12
  5. Step 5: Solve for x
    x = 203,817,641,349.12/403,792.60
  6. Step 6: Final answer
    x = 504,758.24

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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.