Home / 30,818,581.60-42,509,164.36-19,819,237.68

Finding the Fourth Proportional to 30,818,581.60, 42,509,164.36 and 19,819,237.68

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Solution

The fourth proportional to 30,818,581.60, 42,509,164.36 and 19,819,237.68 is: 27,337,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,818,581.60 : 42,509,164.36 = 19,819,237.68 : x
  2. Step 2: Convert to fraction form
    30,818,581.60/42,509,164.36 = 19,819,237.68/x
  3. Step 3: Cross multiply
    30,818,581.60x = 42,509,164.36 × 19,819,237.68
  4. Step 4: Simplify right side
    30,818,581.60x = 842,499,232,029,025
  5. Step 5: Solve for x
    x = 842,499,232,029,025/30,818,581.60
  6. Step 6: Final answer
    x = 27,337,378.56

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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.