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Finding the Fourth Proportional to 386,158,082.40, 579,237,123.60 and 386,158,082.40

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Solution

The fourth proportional to 386,158,082.40, 579,237,123.60 and 386,158,082.40 is: 579,237,123.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,158,082.40 : 579,237,123.60 = 386,158,082.40 : x
  2. Step 2: Convert to fraction form
    386,158,082.40/579,237,123.60 = 386,158,082.40/x
  3. Step 3: Cross multiply
    386,158,082.40x = 579,237,123.60 × 386,158,082.40
  4. Step 4: Simplify right side
    386,158,082.40x = 223,677,096,904,267,776
  5. Step 5: Solve for x
    x = 223,677,096,904,267,776/386,158,082.40
  6. Step 6: Final answer
    x = 579,237,123.60

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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.