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Finding the Fourth Proportional to 526,334.79, 726,297.93 and 311,437.20

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Solution

The fourth proportional to 526,334.79, 726,297.93 and 311,437.20 is: 429,757.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,334.79 : 726,297.93 = 311,437.20 : x
  2. Step 2: Convert to fraction form
    526,334.79/726,297.93 = 311,437.20/x
  3. Step 3: Cross multiply
    526,334.79x = 726,297.93 × 311,437.20
  4. Step 4: Simplify right side
    526,334.79x = 226,196,193,685.00
  5. Step 5: Solve for x
    x = 226,196,193,685.00/526,334.79
  6. Step 6: Final answer
    x = 429,757.25

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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.