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Finding the Fourth Proportional to 611,741.80, 917,612.70 and 454,277.80

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Solution

The fourth proportional to 611,741.80, 917,612.70 and 454,277.80 is: 681,416.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,741.80 : 917,612.70 = 454,277.80 : x
  2. Step 2: Convert to fraction form
    611,741.80/917,612.70 = 454,277.80/x
  3. Step 3: Cross multiply
    611,741.80x = 917,612.70 × 454,277.80
  4. Step 4: Simplify right side
    611,741.80x = 416,851,078,608.06
  5. Step 5: Solve for x
    x = 416,851,078,608.06/611,741.80
  6. Step 6: Final answer
    x = 681,416.70

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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.