Home / 70,127,999.20-105,191,998.80-53,121,887.20

Finding the Fourth Proportional to 70,127,999.20, 105,191,998.80 and 53,121,887.20

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Solution

The fourth proportional to 70,127,999.20, 105,191,998.80 and 53,121,887.20 is: 79,682,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,127,999.20 : 105,191,998.80 = 53,121,887.20 : x
  2. Step 2: Convert to fraction form
    70,127,999.20/105,191,998.80 = 53,121,887.20/x
  3. Step 3: Cross multiply
    70,127,999.20x = 105,191,998.80 × 53,121,887.20
  4. Step 4: Simplify right side
    70,127,999.20x = 5,587,997,494,596,136
  5. Step 5: Solve for x
    x = 5,587,997,494,596,136/70,127,999.20
  6. Step 6: Final answer
    x = 79,682,830.80

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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.