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Finding the Fourth Proportional to 116,640,602.80, 174,960,904.20 and 86,407,514.80

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Solution

The fourth proportional to 116,640,602.80, 174,960,904.20 and 86,407,514.80 is: 129,611,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,640,602.80 : 174,960,904.20 = 86,407,514.80 : x
  2. Step 2: Convert to fraction form
    116,640,602.80/174,960,904.20 = 86,407,514.80/x
  3. Step 3: Cross multiply
    116,640,602.80x = 174,960,904.20 × 86,407,514.80
  4. Step 4: Simplify right side
    116,640,602.80x = 15,117,936,919,082,880
  5. Step 5: Solve for x
    x = 15,117,936,919,082,880/116,640,602.80
  6. Step 6: Final answer
    x = 129,611,272.20

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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.