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Finding the Fourth Proportional to 986,815.82, 1,478,698 and 770,160.86

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Solution

The fourth proportional to 986,815.82, 1,478,698 and 770,160.86 is: 1,154,050.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,815.82 : 1,478,698 = 770,160.86 : x
  2. Step 2: Convert to fraction form
    986,815.82/1,478,698 = 770,160.86/x
  3. Step 3: Cross multiply
    986,815.82x = 1,478,698 × 770,160.86
  4. Step 4: Simplify right side
    986,815.82x = 1,138,835,323,360.28
  5. Step 5: Solve for x
    x = 1,138,835,323,360.28/986,815.82
  6. Step 6: Final answer
    x = 1,154,050.53

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1.5x scale

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.