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Finding the Fourth Proportional to 70,964,649.47, 106,464,953.14 and 21,782,996.22

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Solution

The fourth proportional to 70,964,649.47, 106,464,953.14 and 21,782,996.22 is: 32,680,013.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,964,649.47 : 106,464,953.14 = 21,782,996.22 : x
  2. Step 2: Convert to fraction form
    70,964,649.47/106,464,953.14 = 21,782,996.22/x
  3. Step 3: Cross multiply
    70,964,649.47x = 106,464,953.14 × 21,782,996.22
  4. Step 4: Simplify right side
    70,964,649.47x = 2,319,125,671,756,639.50
  5. Step 5: Solve for x
    x = 2,319,125,671,756,639.50/70,964,649.47
  6. Step 6: Final answer
    x = 32,680,013.06

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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.