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Finding the Fourth Proportional to 18,704,701.80, 28,057,052.70 and 18,144,829.80

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Solution

The fourth proportional to 18,704,701.80, 28,057,052.70 and 18,144,829.80 is: 27,217,244.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704,701.80 : 28,057,052.70 = 18,144,829.80 : x
  2. Step 2: Convert to fraction form
    18,704,701.80/28,057,052.70 = 18,144,829.80/x
  3. Step 3: Cross multiply
    18,704,701.80x = 28,057,052.70 × 18,144,829.80
  4. Step 4: Simplify right side
    18,704,701.80x = 509,090,445,931,130.44
  5. Step 5: Solve for x
    x = 509,090,445,931,130.44/18,704,701.80
  6. Step 6: Final answer
    x = 27,217,244.70

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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.