Home / 86,508,006.30-129,762,009.45-76,430,310.30

Finding the Fourth Proportional to 86,508,006.30, 129,762,009.45 and 76,430,310.30

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Solution

The fourth proportional to 86,508,006.30, 129,762,009.45 and 76,430,310.30 is: 114,645,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508,006.30 : 129,762,009.45 = 76,430,310.30 : x
  2. Step 2: Convert to fraction form
    86,508,006.30/129,762,009.45 = 76,430,310.30/x
  3. Step 3: Cross multiply
    86,508,006.30x = 129,762,009.45 × 76,430,310.30
  4. Step 4: Simplify right side
    86,508,006.30x = 9,917,750,647,415,032
  5. Step 5: Solve for x
    x = 9,917,750,647,415,032/86,508,006.30
  6. Step 6: Final answer
    x = 114,645,465.45

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Double scale
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Similar ratio
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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.