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Finding the Fourth Proportional to 702,039.18, 968,730.60 and 396,097.98

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Solution

The fourth proportional to 702,039.18, 968,730.60 and 396,097.98 is: 546,568.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,039.18 : 968,730.60 = 396,097.98 : x
  2. Step 2: Convert to fraction form
    702,039.18/968,730.60 = 396,097.98/x
  3. Step 3: Cross multiply
    702,039.18x = 968,730.60 × 396,097.98
  4. Step 4: Simplify right side
    702,039.18x = 383,712,233,824.19
  5. Step 5: Solve for x
    x = 383,712,233,824.19/702,039.18
  6. Step 6: Final answer
    x = 546,568.12

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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.