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Finding the Fourth Proportional to 73,260,230.40, 109,890,345.60 and 18,672,710.40

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Solution

The fourth proportional to 73,260,230.40, 109,890,345.60 and 18,672,710.40 is: 28,009,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,260,230.40 : 109,890,345.60 = 18,672,710.40 : x
  2. Step 2: Convert to fraction form
    73,260,230.40/109,890,345.60 = 18,672,710.40/x
  3. Step 3: Cross multiply
    73,260,230.40x = 109,890,345.60 × 18,672,710.40
  4. Step 4: Simplify right side
    73,260,230.40x = 2,051,950,599,144,714
  5. Step 5: Solve for x
    x = 2,051,950,599,144,714/73,260,230.40
  6. Step 6: Final answer
    x = 28,009,065.60

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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.