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Finding the Fourth Proportional to 713,555.60, 1,069,426.20 and 292,355.60

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Solution

The fourth proportional to 713,555.60, 1,069,426.20 and 292,355.60 is: 438,161.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,555.60 : 1,069,426.20 = 292,355.60 : x
  2. Step 2: Convert to fraction form
    713,555.60/1,069,426.20 = 292,355.60/x
  3. Step 3: Cross multiply
    713,555.60x = 1,069,426.20 × 292,355.60
  4. Step 4: Simplify right side
    713,555.60x = 312,652,738,356.72
  5. Step 5: Solve for x
    x = 312,652,738,356.72/713,555.60
  6. Step 6: Final answer
    x = 438,161.71

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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.