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Finding the Fourth Proportional to 940,135,809.10, 1,317,550,621.70 and 940,135,809.10

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Solution

The fourth proportional to 940,135,809.10, 1,317,550,621.70 and 940,135,809.10 is: 1,317,550,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,135,809.10 : 1,317,550,621.70 = 940,135,809.10 : x
  2. Step 2: Convert to fraction form
    940,135,809.10/1,317,550,621.70 = 940,135,809.10/x
  3. Step 3: Cross multiply
    940,135,809.10x = 1,317,550,621.70 × 940,135,809.10
  4. Step 4: Simplify right side
    940,135,809.10x = 1,238,676,519,762,137,600
  5. Step 5: Solve for x
    x = 1,238,676,519,762,137,600/940,135,809.10
  6. Step 6: Final answer
    x = 1,317,550,621.70

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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.