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Finding the Fourth Proportional to 7,921,281,636.40, 11,881,922,454.60 and 7,921,281,636.40

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Solution

The fourth proportional to 7,921,281,636.40, 11,881,922,454.60 and 7,921,281,636.40 is: 11,881,922,454.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921,281,636.40 : 11,881,922,454.60 = 7,921,281,636.40 : x
  2. Step 2: Convert to fraction form
    7,921,281,636.40/11,881,922,454.60 = 7,921,281,636.40/x
  3. Step 3: Cross multiply
    7,921,281,636.40x = 11,881,922,454.60 × 7,921,281,636.40
  4. Step 4: Simplify right side
    7,921,281,636.40x = 94,120,054,144,751,796,224
  5. Step 5: Solve for x
    x = 94,120,054,144,751,796,224/7,921,281,636.40
  6. Step 6: Final answer
    x = 11,881,922,454.60

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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.