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Finding the Fourth Proportional to 171,547.30, 257,331.03 and 66,366.82

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Solution

The fourth proportional to 171,547.30, 257,331.03 and 66,366.82 is: 99,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,547.30 : 257,331.03 = 66,366.82 : x
  2. Step 2: Convert to fraction form
    171,547.30/257,331.03 = 66,366.82/x
  3. Step 3: Cross multiply
    171,547.30x = 257,331.03 × 66,366.82
  4. Step 4: Simplify right side
    171,547.30x = 17,078,242,148.42
  5. Step 5: Solve for x
    x = 17,078,242,148.42/171,547.30
  6. Step 6: Final answer
    x = 99,554.13

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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.