Home / 13,779,256.57-19,014,138.12-7,978,429.83

Finding the Fourth Proportional to 13,779,256.57, 19,014,138.12 and 7,978,429.83

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Solution

The fourth proportional to 13,779,256.57, 19,014,138.12 and 7,978,429.83 is: 11,009,517.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779,256.57 : 19,014,138.12 = 7,978,429.83 : x
  2. Step 2: Convert to fraction form
    13,779,256.57/19,014,138.12 = 7,978,429.83/x
  3. Step 3: Cross multiply
    13,779,256.57x = 19,014,138.12 × 7,978,429.83
  4. Step 4: Simplify right side
    13,779,256.57x = 151,702,966,768,348.12
  5. Step 5: Solve for x
    x = 151,702,966,768,348.12/13,779,256.57
  6. Step 6: Final answer
    x = 11,009,517.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.