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Finding the Fourth Proportional to 251,279,678.40, 376,639,581.60 and 97,874,750.40

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Solution

The fourth proportional to 251,279,678.40, 376,639,581.60 and 97,874,750.40 is: 146,703,089.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,279,678.40 : 376,639,581.60 = 97,874,750.40 : x
  2. Step 2: Convert to fraction form
    251,279,678.40/376,639,581.60 = 97,874,750.40/x
  3. Step 3: Cross multiply
    251,279,678.40x = 376,639,581.60 × 97,874,750.40
  4. Step 4: Simplify right side
    251,279,678.40x = 36,863,505,039,860,440
  5. Step 5: Solve for x
    x = 36,863,505,039,860,440/251,279,678.40
  6. Step 6: Final answer
    x = 146,703,089.06

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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.