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Finding the Fourth Proportional to 171,307.95, 256,969.12 and 52,981.53

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Solution

The fourth proportional to 171,307.95, 256,969.12 and 52,981.53 is: 79,474.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,307.95 : 256,969.12 = 52,981.53 : x
  2. Step 2: Convert to fraction form
    171,307.95/256,969.12 = 52,981.53/x
  3. Step 3: Cross multiply
    171,307.95x = 256,969.12 × 52,981.53
  4. Step 4: Simplify right side
    171,307.95x = 13,614,615,855.51
  5. Step 5: Solve for x
    x = 13,614,615,855.51/171,307.95
  6. Step 6: Final answer
    x = 79,474.52

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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.