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Finding the Fourth Proportional to 713,608.60, 1,069,505.70 and 292,408.60

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Solution

The fourth proportional to 713,608.60, 1,069,505.70 and 292,408.60 is: 438,241.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,608.60 : 1,069,505.70 = 292,408.60 : x
  2. Step 2: Convert to fraction form
    713,608.60/1,069,505.70 = 292,408.60/x
  3. Step 3: Cross multiply
    713,608.60x = 1,069,505.70 × 292,408.60
  4. Step 4: Simplify right side
    713,608.60x = 312,732,664,429.02
  5. Step 5: Solve for x
    x = 312,732,664,429.02/713,608.60
  6. Step 6: Final answer
    x = 438,241.17

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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.