Home / 65,579,216.80-98,368,825.20-20,140,938.40

Finding the Fourth Proportional to 65,579,216.80, 98,368,825.20 and 20,140,938.40

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Solution

The fourth proportional to 65,579,216.80, 98,368,825.20 and 20,140,938.40 is: 30,211,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,579,216.80 : 98,368,825.20 = 20,140,938.40 : x
  2. Step 2: Convert to fraction form
    65,579,216.80/98,368,825.20 = 20,140,938.40/x
  3. Step 3: Cross multiply
    65,579,216.80x = 98,368,825.20 × 20,140,938.40
  4. Step 4: Simplify right side
    65,579,216.80x = 1,981,240,448,833,567.50
  5. Step 5: Solve for x
    x = 1,981,240,448,833,567.50/65,579,216.80
  6. Step 6: Final answer
    x = 30,211,407.60

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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.