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Finding the Fourth Proportional to 611,704.90, 917,557.35 and 454,240.90

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Solution

The fourth proportional to 611,704.90, 917,557.35 and 454,240.90 is: 681,361.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,704.90 : 917,557.35 = 454,240.90 : x
  2. Step 2: Convert to fraction form
    611,704.90/917,557.35 = 454,240.90/x
  3. Step 3: Cross multiply
    611,704.90x = 917,557.35 × 454,240.90
  4. Step 4: Simplify right side
    611,704.90x = 416,792,076,465.62
  5. Step 5: Solve for x
    x = 416,792,076,465.62/611,704.90
  6. Step 6: Final answer
    x = 681,361.35

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Half scale
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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.