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Finding the Fourth Proportional to 851,477,187.40, 1,277,215,781.10 and 851,477,187.40

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Solution

The fourth proportional to 851,477,187.40, 1,277,215,781.10 and 851,477,187.40 is: 1,277,215,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,477,187.40 : 1,277,215,781.10 = 851,477,187.40 : x
  2. Step 2: Convert to fraction form
    851,477,187.40/1,277,215,781.10 = 851,477,187.40/x
  3. Step 3: Cross multiply
    851,477,187.40x = 1,277,215,781.10 × 851,477,187.40
  4. Step 4: Simplify right side
    851,477,187.40x = 1,087,520,100,993,921,920
  5. Step 5: Solve for x
    x = 1,087,520,100,993,921,920/851,477,187.40
  6. Step 6: Final answer
    x = 1,277,215,781.10

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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.