Home / 18,405,128.55-25,400,213.75-10,145,172.20

Finding the Fourth Proportional to 18,405,128.55, 25,400,213.75 and 10,145,172.20

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Solution

The fourth proportional to 18,405,128.55, 25,400,213.75 and 10,145,172.20 is: 14,000,964.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405,128.55 : 25,400,213.75 = 10,145,172.20 : x
  2. Step 2: Convert to fraction form
    18,405,128.55/25,400,213.75 = 10,145,172.20/x
  3. Step 3: Cross multiply
    18,405,128.55x = 25,400,213.75 × 10,145,172.20
  4. Step 4: Simplify right side
    18,405,128.55x = 257,689,542,232,830.84
  5. Step 5: Solve for x
    x = 257,689,542,232,830.84/18,405,128.55
  6. Step 6: Final answer
    x = 14,000,964.00

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1.5x scale

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.