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Finding the Fourth Proportional to 136,683,442.40, 205,025,163.60 and 65,019,826.40

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Solution

The fourth proportional to 136,683,442.40, 205,025,163.60 and 65,019,826.40 is: 97,529,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,683,442.40 : 205,025,163.60 = 65,019,826.40 : x
  2. Step 2: Convert to fraction form
    136,683,442.40/205,025,163.60 = 65,019,826.40/x
  3. Step 3: Cross multiply
    136,683,442.40x = 205,025,163.60 × 65,019,826.40
  4. Step 4: Simplify right side
    136,683,442.40x = 13,330,700,544,903,598
  5. Step 5: Solve for x
    x = 13,330,700,544,903,598/136,683,442.40
  6. Step 6: Final answer
    x = 97,529,739.60

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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.