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Finding the Fourth Proportional to 7,848,279.60, 10,962,397.20 and 7,848,279.60

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Solution

The fourth proportional to 7,848,279.60, 10,962,397.20 and 7,848,279.60 is: 10,962,397.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,848,279.60 : 10,962,397.20 = 7,848,279.60 : x
  2. Step 2: Convert to fraction form
    7,848,279.60/10,962,397.20 = 7,848,279.60/x
  3. Step 3: Cross multiply
    7,848,279.60x = 10,962,397.20 × 7,848,279.60
  4. Step 4: Simplify right side
    7,848,279.60x = 86,035,958,311,857.11
  5. Step 5: Solve for x
    x = 86,035,958,311,857.11/7,848,279.60
  6. Step 6: Final answer
    x = 10,962,397.20

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Double scale
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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.