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Finding the Fourth Proportional to 10,651,878.60, 15,977,817.90 and 10,651,878.60

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Solution

The fourth proportional to 10,651,878.60, 15,977,817.90 and 10,651,878.60 is: 15,977,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,651,878.60 : 15,977,817.90 = 10,651,878.60 : x
  2. Step 2: Convert to fraction form
    10,651,878.60/15,977,817.90 = 10,651,878.60/x
  3. Step 3: Cross multiply
    10,651,878.60x = 15,977,817.90 × 10,651,878.60
  4. Step 4: Simplify right side
    10,651,878.60x = 170,193,776,563,706.94
  5. Step 5: Solve for x
    x = 170,193,776,563,706.94/10,651,878.60
  6. Step 6: Final answer
    x = 15,977,817.90

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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.