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Finding the Fourth Proportional to 10,651,605.60, 15,977,408.40 and 7,250,383.20

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Solution

The fourth proportional to 10,651,605.60, 15,977,408.40 and 7,250,383.20 is: 10,875,574.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,651,605.60 : 15,977,408.40 = 7,250,383.20 : x
  2. Step 2: Convert to fraction form
    10,651,605.60/15,977,408.40 = 7,250,383.20/x
  3. Step 3: Cross multiply
    10,651,605.60x = 15,977,408.40 × 7,250,383.20
  4. Step 4: Simplify right side
    10,651,605.60x = 115,842,333,442,898.89
  5. Step 5: Solve for x
    x = 115,842,333,442,898.89/10,651,605.60
  6. Step 6: Final answer
    x = 10,875,574.80

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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.