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Finding the Fourth Proportional to 7,978,176,534.60, 11,187,813,749.40 and 7,978,176,534.60

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Solution

The fourth proportional to 7,978,176,534.60, 11,187,813,749.40 and 7,978,176,534.60 is: 11,187,813,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,176,534.60 : 11,187,813,749.40 = 7,978,176,534.60 : x
  2. Step 2: Convert to fraction form
    7,978,176,534.60/11,187,813,749.40 = 7,978,176,534.60/x
  3. Step 3: Cross multiply
    7,978,176,534.60x = 11,187,813,749.40 × 7,978,176,534.60
  4. Step 4: Simplify right side
    7,978,176,534.60x = 89,258,353,128,938,323,968
  5. Step 5: Solve for x
    x = 89,258,353,128,938,323,968/7,978,176,534.60
  6. Step 6: Final answer
    x = 11,187,813,749.40

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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.