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Finding the Fourth Proportional to 139,158,082.60, 208,737,123.90 and 139,158,082.60

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Solution

The fourth proportional to 139,158,082.60, 208,737,123.90 and 139,158,082.60 is: 208,737,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,158,082.60 : 208,737,123.90 = 139,158,082.60 : x
  2. Step 2: Convert to fraction form
    139,158,082.60/208,737,123.90 = 139,158,082.60/x
  3. Step 3: Cross multiply
    139,158,082.60x = 208,737,123.90 × 139,158,082.60
  4. Step 4: Simplify right side
    139,158,082.60x = 29,047,457,929,362,632
  5. Step 5: Solve for x
    x = 29,047,457,929,362,632/139,158,082.60
  6. Step 6: Final answer
    x = 208,737,123.90

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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.