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Finding the Fourth Proportional to 18,784,333.60, 28,210,714.80 and 16,432,871.20

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Solution

The fourth proportional to 18,784,333.60, 28,210,714.80 and 16,432,871.20 is: 24,679,238.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784,333.60 : 28,210,714.80 = 16,432,871.20 : x
  2. Step 2: Convert to fraction form
    18,784,333.60/28,210,714.80 = 16,432,871.20/x
  3. Step 3: Cross multiply
    18,784,333.60x = 28,210,714.80 × 16,432,871.20
  4. Step 4: Simplify right side
    18,784,333.60x = 463,583,042,768,333.75
  5. Step 5: Solve for x
    x = 463,583,042,768,333.75/18,784,333.60
  6. Step 6: Final answer
    x = 24,679,238.17

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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.