Home / 18,909,364.56-28,372,903.92-9,319,515.36

Finding the Fourth Proportional to 18,909,364.56, 28,372,903.92 and 9,319,515.36

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Solution

The fourth proportional to 18,909,364.56, 28,372,903.92 and 9,319,515.36 is: 13,983,638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,364.56 : 28,372,903.92 = 9,319,515.36 : x
  2. Step 2: Convert to fraction form
    18,909,364.56/28,372,903.92 = 9,319,515.36/x
  3. Step 3: Cross multiply
    18,909,364.56x = 28,372,903.92 × 9,319,515.36
  4. Step 4: Simplify right side
    18,909,364.56x = 264,421,713,890,244.22
  5. Step 5: Solve for x
    x = 264,421,713,890,244.22/18,909,364.56
  6. Step 6: Final answer
    x = 13,983,638.27

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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.