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Finding the Fourth Proportional to 28,029,457.90, 42,044,186.86 and 28,029,457.90

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Solution

The fourth proportional to 28,029,457.90, 42,044,186.86 and 28,029,457.90 is: 42,044,186.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029,457.90 : 42,044,186.86 = 28,029,457.90 : x
  2. Step 2: Convert to fraction form
    28,029,457.90/42,044,186.86 = 28,029,457.90/x
  3. Step 3: Cross multiply
    28,029,457.90x = 42,044,186.86 × 28,029,457.90
  4. Step 4: Simplify right side
    28,029,457.90x = 1,178,475,765,532,103
  5. Step 5: Solve for x
    x = 1,178,475,765,532,103/28,029,457.90
  6. Step 6: Final answer
    x = 42,044,186.86

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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.