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Finding the Fourth Proportional to 1,092,139,938.80, 1,638,209,908.20 and 1,092,139,938.80

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Solution

The fourth proportional to 1,092,139,938.80, 1,638,209,908.20 and 1,092,139,938.80 is: 1,638,209,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,139,938.80 : 1,638,209,908.20 = 1,092,139,938.80 : x
  2. Step 2: Convert to fraction form
    1,092,139,938.80/1,638,209,908.20 = 1,092,139,938.80/x
  3. Step 3: Cross multiply
    1,092,139,938.80x = 1,638,209,908.20 × 1,092,139,938.80
  4. Step 4: Simplify right side
    1,092,139,938.80x = 1,789,154,468,883,101,696
  5. Step 5: Solve for x
    x = 1,789,154,468,883,101,696/1,092,139,938.80
  6. Step 6: Final answer
    x = 1,638,209,908.20

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Double scale
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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.