Home / 18,820,717.20-28,231,075.80-18,678,999.60

Finding the Fourth Proportional to 18,820,717.20, 28,231,075.80 and 18,678,999.60

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Solution

The fourth proportional to 18,820,717.20, 28,231,075.80 and 18,678,999.60 is: 28,018,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820,717.20 : 28,231,075.80 = 18,678,999.60 : x
  2. Step 2: Convert to fraction form
    18,820,717.20/28,231,075.80 = 18,678,999.60/x
  3. Step 3: Cross multiply
    18,820,717.20x = 28,231,075.80 × 18,678,999.60
  4. Step 4: Simplify right side
    18,820,717.20x = 527,328,253,575,769.75
  5. Step 5: Solve for x
    x = 527,328,253,575,769.75/18,820,717.20
  6. Step 6: Final answer
    x = 28,018,499.40

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1.5x scale

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.