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Finding the Fourth Proportional to 715,669,873.40, 1,071,993,155.70 and 715,669,873.40

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Solution

The fourth proportional to 715,669,873.40, 1,071,993,155.70 and 715,669,873.40 is: 1,071,993,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,669,873.40 : 1,071,993,155.70 = 715,669,873.40 : x
  2. Step 2: Convert to fraction form
    715,669,873.40/1,071,993,155.70 = 715,669,873.40/x
  3. Step 3: Cross multiply
    715,669,873.40x = 1,071,993,155.70 × 715,669,873.40
  4. Step 4: Simplify right side
    715,669,873.40x = 767,193,206,025,485,440
  5. Step 5: Solve for x
    x = 767,193,206,025,485,440/715,669,873.40
  6. Step 6: Final answer
    x = 1,071,993,155.70

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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.