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Finding the Fourth Proportional to 525,772.77, 788,659.16 and 126,413.56

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Solution

The fourth proportional to 525,772.77, 788,659.16 and 126,413.56 is: 189,620.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,772.77 : 788,659.16 = 126,413.56 : x
  2. Step 2: Convert to fraction form
    525,772.77/788,659.16 = 126,413.56/x
  3. Step 3: Cross multiply
    525,772.77x = 788,659.16 × 126,413.56
  4. Step 4: Simplify right side
    525,772.77x = 99,697,212,042.21
  5. Step 5: Solve for x
    x = 99,697,212,042.21/525,772.77
  6. Step 6: Final answer
    x = 189,620.34

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Double scale
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Similar ratio
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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.