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Finding the Fourth Proportional to 1,980,458.06, 2,733,097.23 and 1,120,999.86

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Solution

The fourth proportional to 1,980,458.06, 2,733,097.23 and 1,120,999.86 is: 1,547,016.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980,458.06 : 2,733,097.23 = 1,120,999.86 : x
  2. Step 2: Convert to fraction form
    1,980,458.06/2,733,097.23 = 1,120,999.86/x
  3. Step 3: Cross multiply
    1,980,458.06x = 2,733,097.23 × 1,120,999.86
  4. Step 4: Simplify right side
    1,980,458.06x = 3,063,801,612,196.39
  5. Step 5: Solve for x
    x = 3,063,801,612,196.39/1,980,458.06
  6. Step 6: Final answer
    x = 1,547,016.66

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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.