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Finding the Fourth Proportional to 386,277,841.60, 579,416,762.40 and 127,532,996.80

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Solution

The fourth proportional to 386,277,841.60, 579,416,762.40 and 127,532,996.80 is: 191,299,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,277,841.60 : 579,416,762.40 = 127,532,996.80 : x
  2. Step 2: Convert to fraction form
    386,277,841.60/579,416,762.40 = 127,532,996.80/x
  3. Step 3: Cross multiply
    386,277,841.60x = 579,416,762.40 × 127,532,996.80
  4. Step 4: Simplify right side
    386,277,841.60x = 73,894,756,105,025,552
  5. Step 5: Solve for x
    x = 73,894,756,105,025,552/386,277,841.60
  6. Step 6: Final answer
    x = 191,299,495.20

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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.