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Finding the Fourth Proportional to 573,159.95, 858,925.22 and 422,213.21

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Solution

The fourth proportional to 573,159.95, 858,925.22 and 422,213.21 is: 632,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,159.95 : 858,925.22 = 422,213.21 : x
  2. Step 2: Convert to fraction form
    573,159.95/858,925.22 = 422,213.21/x
  3. Step 3: Cross multiply
    573,159.95x = 858,925.22 × 422,213.21
  4. Step 4: Simplify right side
    573,159.95x = 362,649,571,101.43
  5. Step 5: Solve for x
    x = 362,649,571,101.43/573,159.95
  6. Step 6: Final answer
    x = 632,719.67

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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.