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Finding the Fourth Proportional to 854,326,796.13, 1,287,893,543.90 and 797,377,117.21

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Solution

The fourth proportional to 854,326,796.13, 1,287,893,543.90 and 797,377,117.21 is: 1,202,042,176.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,326,796.13 : 1,287,893,543.90 = 797,377,117.21 : x
  2. Step 2: Convert to fraction form
    854,326,796.13/1,287,893,543.90 = 797,377,117.21/x
  3. Step 3: Cross multiply
    854,326,796.13x = 1,287,893,543.90 × 797,377,117.21
  4. Step 4: Simplify right side
    854,326,796.13x = 1,026,936,841,301,145,984
  5. Step 5: Solve for x
    x = 1,026,936,841,301,145,984/854,326,796.13
  6. Step 6: Final answer
    x = 1,202,042,176.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.