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Finding the Fourth Proportional to 39,707,811.20, 55,477,561.60 and 39,707,811.20

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Solution

The fourth proportional to 39,707,811.20, 55,477,561.60 and 39,707,811.20 is: 55,477,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,707,811.20 : 55,477,561.60 = 39,707,811.20 : x
  2. Step 2: Convert to fraction form
    39,707,811.20/55,477,561.60 = 39,707,811.20/x
  3. Step 3: Cross multiply
    39,707,811.20x = 55,477,561.60 × 39,707,811.20
  4. Step 4: Simplify right side
    39,707,811.20x = 2,202,892,541,849,170.25
  5. Step 5: Solve for x
    x = 2,202,892,541,849,170.25/39,707,811.20
  6. Step 6: Final answer
    x = 55,477,561.60

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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.