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Finding the Fourth Proportional to 986,817.07, 1,478,699.88 and 770,162.11

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Solution

The fourth proportional to 986,817.07, 1,478,699.88 and 770,162.11 is: 1,154,052.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,817.07 : 1,478,699.88 = 770,162.11 : x
  2. Step 2: Convert to fraction form
    986,817.07/1,478,699.88 = 770,162.11/x
  3. Step 3: Cross multiply
    986,817.07x = 1,478,699.88 × 770,162.11
  4. Step 4: Simplify right side
    986,817.07x = 1,138,838,615,786.74
  5. Step 5: Solve for x
    x = 1,138,838,615,786.74/986,817.07
  6. Step 6: Final answer
    x = 1,154,052.41

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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.