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Finding the Fourth Proportional to 1,227,328,924.51, 1,693,713,851.05 and 662,813,751.80

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Solution

The fourth proportional to 1,227,328,924.51, 1,693,713,851.05 and 662,813,751.80 is: 914,682,942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227,328,924.51 : 1,693,713,851.05 = 662,813,751.80 : x
  2. Step 2: Convert to fraction form
    1,227,328,924.51/1,693,713,851.05 = 662,813,751.80/x
  3. Step 3: Cross multiply
    1,227,328,924.51x = 1,693,713,851.05 × 662,813,751.80
  4. Step 4: Simplify right side
    1,227,328,924.51x = 1,122,616,832,090,076,800
  5. Step 5: Solve for x
    x = 1,122,616,832,090,076,800/1,227,328,924.51
  6. Step 6: Final answer
    x = 914,682,942.50

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.