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Finding the Fourth Proportional to 331,842,661.60, 497,763,992.40 and 101,811,377.20

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Solution

The fourth proportional to 331,842,661.60, 497,763,992.40 and 101,811,377.20 is: 152,717,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,842,661.60 : 497,763,992.40 = 101,811,377.20 : x
  2. Step 2: Convert to fraction form
    331,842,661.60/497,763,992.40 = 101,811,377.20/x
  3. Step 3: Cross multiply
    331,842,661.60x = 497,763,992.40 × 101,811,377.20
  4. Step 4: Simplify right side
    331,842,661.60x = 50,678,037,586,814,336
  5. Step 5: Solve for x
    x = 50,678,037,586,814,336/331,842,661.60
  6. Step 6: Final answer
    x = 152,717,065.80

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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.