Home / 18,689,576.40-28,039,613.40-9,105,267.60

Finding the Fourth Proportional to 18,689,576.40, 28,039,613.40 and 9,105,267.60

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Solution

The fourth proportional to 18,689,576.40, 28,039,613.40 and 9,105,267.60 is: 13,660,458.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,576.40 : 28,039,613.40 = 9,105,267.60 : x
  2. Step 2: Convert to fraction form
    18,689,576.40/28,039,613.40 = 9,105,267.60/x
  3. Step 3: Cross multiply
    18,689,576.40x = 28,039,613.40 × 9,105,267.60
  4. Step 4: Simplify right side
    18,689,576.40x = 255,308,183,407,545.81
  5. Step 5: Solve for x
    x = 255,308,183,407,545.81/18,689,576.40
  6. Step 6: Final answer
    x = 13,660,458.53

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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.