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Finding the Fourth Proportional to 171,872.39, 257,822.42 and 65,307.42

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Solution

The fourth proportional to 171,872.39, 257,822.42 and 65,307.42 is: 97,966.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,872.39 : 257,822.42 = 65,307.42 : x
  2. Step 2: Convert to fraction form
    171,872.39/257,822.42 = 65,307.42/x
  3. Step 3: Cross multiply
    171,872.39x = 257,822.42 × 65,307.42
  4. Step 4: Simplify right side
    171,872.39x = 16,837,717,068.36
  5. Step 5: Solve for x
    x = 16,837,717,068.36/171,872.39
  6. Step 6: Final answer
    x = 97,966.39

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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.