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Finding the Fourth Proportional to 99,660,699.60, 139,184,857.20 and 99,660,699.60

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Solution

The fourth proportional to 99,660,699.60, 139,184,857.20 and 99,660,699.60 is: 139,184,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,660,699.60 : 139,184,857.20 = 99,660,699.60 : x
  2. Step 2: Convert to fraction form
    99,660,699.60/139,184,857.20 = 99,660,699.60/x
  3. Step 3: Cross multiply
    99,660,699.60x = 139,184,857.20 × 99,660,699.60
  4. Step 4: Simplify right side
    99,660,699.60x = 13,871,260,242,278,096
  5. Step 5: Solve for x
    x = 13,871,260,242,278,096/99,660,699.60
  6. Step 6: Final answer
    x = 139,184,857.20

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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.