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Finding the Fourth Proportional to 171,681.40, 257,522.10 and 53,364.70

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Solution

The fourth proportional to 171,681.40, 257,522.10 and 53,364.70 is: 80,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,681.40 : 257,522.10 = 53,364.70 : x
  2. Step 2: Convert to fraction form
    171,681.40/257,522.10 = 53,364.70/x
  3. Step 3: Cross multiply
    171,681.40x = 257,522.10 × 53,364.70
  4. Step 4: Simplify right side
    171,681.40x = 13,742,589,609.87
  5. Step 5: Solve for x
    x = 13,742,589,609.87/171,681.40
  6. Step 6: Final answer
    x = 80,047.05

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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.