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Finding the Fourth Proportional to 71,820,027.80, 100,803,130.60 and 71,820,027.80

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Solution

The fourth proportional to 71,820,027.80, 100,803,130.60 and 71,820,027.80 is: 100,803,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,820,027.80 : 100,803,130.60 = 71,820,027.80 : x
  2. Step 2: Convert to fraction form
    71,820,027.80/100,803,130.60 = 71,820,027.80/x
  3. Step 3: Cross multiply
    71,820,027.80x = 100,803,130.60 × 71,820,027.80
  4. Step 4: Simplify right side
    71,820,027.80x = 7,239,683,642,019,030
  5. Step 5: Solve for x
    x = 7,239,683,642,019,030/71,820,027.80
  6. Step 6: Final answer
    x = 100,803,130.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.