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Finding the Fourth Proportional to 916,396,379.56, 1,264,893,489 and 598,904,386.40

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Solution

The fourth proportional to 916,396,379.56, 1,264,893,489 and 598,904,386.40 is: 826,662,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,396,379.56 : 1,264,893,489 = 598,904,386.40 : x
  2. Step 2: Convert to fraction form
    916,396,379.56/1,264,893,489 = 598,904,386.40/x
  3. Step 3: Cross multiply
    916,396,379.56x = 1,264,893,489 × 598,904,386.40
  4. Step 4: Simplify right side
    916,396,379.56x = 757,550,258,890,900,096
  5. Step 5: Solve for x
    x = 757,550,258,890,900,096/916,396,379.56
  6. Step 6: Final answer
    x = 826,662,212.76

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1.5x scale

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.