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Finding the Fourth Proportional to 619,097.80, 867,917.90 and 619,097.80

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Solution

The fourth proportional to 619,097.80, 867,917.90 and 619,097.80 is: 867,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,097.80 : 867,917.90 = 619,097.80 : x
  2. Step 2: Convert to fraction form
    619,097.80/867,917.90 = 619,097.80/x
  3. Step 3: Cross multiply
    619,097.80x = 867,917.90 × 619,097.80
  4. Step 4: Simplify right side
    619,097.80x = 537,326,062,470.62
  5. Step 5: Solve for x
    x = 537,326,062,470.62/619,097.80
  6. Step 6: Final answer
    x = 867,917.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.