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Finding the Fourth Proportional to 662,711.70, 994,067.55 and 611,390.10

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Solution

The fourth proportional to 662,711.70, 994,067.55 and 611,390.10 is: 917,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,711.70 : 994,067.55 = 611,390.10 : x
  2. Step 2: Convert to fraction form
    662,711.70/994,067.55 = 611,390.10/x
  3. Step 3: Cross multiply
    662,711.70x = 994,067.55 × 611,390.10
  4. Step 4: Simplify right side
    662,711.70x = 607,763,058,801.26
  5. Step 5: Solve for x
    x = 607,763,058,801.26/662,711.70
  6. Step 6: Final answer
    x = 917,085.15

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Double scale
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Similar ratio
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1.5x scale

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.