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Finding the Fourth Proportional to 171,567.52, 257,349.60 and 66,312.88

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Solution

The fourth proportional to 171,567.52, 257,349.60 and 66,312.88 is: 99,468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,567.52 : 257,349.60 = 66,312.88 : x
  2. Step 2: Convert to fraction form
    171,567.52/257,349.60 = 66,312.88/x
  3. Step 3: Cross multiply
    171,567.52x = 257,349.60 × 66,312.88
  4. Step 4: Simplify right side
    171,567.52x = 17,065,593,142.85
  5. Step 5: Solve for x
    x = 17,065,593,142.85/171,567.52
  6. Step 6: Final answer
    x = 99,468.67

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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.