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Finding the Fourth Proportional to 525,777.20, 788,665.80 and 521,111.60

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Solution

The fourth proportional to 525,777.20, 788,665.80 and 521,111.60 is: 781,667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,777.20 : 788,665.80 = 521,111.60 : x
  2. Step 2: Convert to fraction form
    525,777.20/788,665.80 = 521,111.60/x
  3. Step 3: Cross multiply
    525,777.20x = 788,665.80 × 521,111.60
  4. Step 4: Simplify right side
    525,777.20x = 410,982,896,903.28
  5. Step 5: Solve for x
    x = 410,982,896,903.28/525,777.20
  6. Step 6: Final answer
    x = 781,667.40

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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.