Home / 86,209,090.80-129,313,636.20-76,855,729.20

Finding the Fourth Proportional to 86,209,090.80, 129,313,636.20 and 76,855,729.20

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Solution

The fourth proportional to 86,209,090.80, 129,313,636.20 and 76,855,729.20 is: 115,283,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,209,090.80 : 129,313,636.20 = 76,855,729.20 : x
  2. Step 2: Convert to fraction form
    86,209,090.80/129,313,636.20 = 76,855,729.20/x
  3. Step 3: Cross multiply
    86,209,090.80x = 129,313,636.20 × 76,855,729.20
  4. Step 4: Simplify right side
    86,209,090.80x = 9,938,493,805,654,518
  5. Step 5: Solve for x
    x = 9,938,493,805,654,518/86,209,090.80
  6. Step 6: Final answer
    x = 115,283,593.80

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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.