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Finding the Fourth Proportional to 570,334.88, 787,144.96 and 328,570.40

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Solution

The fourth proportional to 570,334.88, 787,144.96 and 328,570.40 is: 453,474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,334.88 : 787,144.96 = 328,570.40 : x
  2. Step 2: Convert to fraction form
    570,334.88/787,144.96 = 328,570.40/x
  3. Step 3: Cross multiply
    570,334.88x = 787,144.96 × 328,570.40
  4. Step 4: Simplify right side
    570,334.88x = 258,632,534,365.18
  5. Step 5: Solve for x
    x = 258,632,534,365.18/570,334.88
  6. Step 6: Final answer
    x = 453,474.87

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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.