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Finding the Fourth Proportional to 166,690.68, 249,968.64 and 61,486.20

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Solution

The fourth proportional to 166,690.68, 249,968.64 and 61,486.20 is: 92,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,690.68 : 249,968.64 = 61,486.20 : x
  2. Step 2: Convert to fraction form
    166,690.68/249,968.64 = 61,486.20/x
  3. Step 3: Cross multiply
    166,690.68x = 249,968.64 × 61,486.20
  4. Step 4: Simplify right side
    166,690.68x = 15,369,621,792.77
  5. Step 5: Solve for x
    x = 15,369,621,792.77/166,690.68
  6. Step 6: Final answer
    x = 92,204.45

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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.