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Finding the Fourth Proportional to 687,850.56, 949,235.60 and 381,927.51

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Solution

The fourth proportional to 687,850.56, 949,235.60 and 381,927.51 is: 527,060.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,850.56 : 949,235.60 = 381,927.51 : x
  2. Step 2: Convert to fraction form
    687,850.56/949,235.60 = 381,927.51/x
  3. Step 3: Cross multiply
    687,850.56x = 949,235.60 × 381,927.51
  4. Step 4: Simplify right side
    687,850.56x = 362,539,190,066.18
  5. Step 5: Solve for x
    x = 362,539,190,066.18/687,850.56
  6. Step 6: Final answer
    x = 527,060.98

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1.5x scale

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.