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Finding the Fourth Proportional to 157,576.61, 217,457.30 and 85,958.15

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Solution

The fourth proportional to 157,576.61, 217,457.30 and 85,958.15 is: 118,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,576.61 : 217,457.30 = 85,958.15 : x
  2. Step 2: Convert to fraction form
    157,576.61/217,457.30 = 85,958.15/x
  3. Step 3: Cross multiply
    157,576.61x = 217,457.30 × 85,958.15
  4. Step 4: Simplify right side
    157,576.61x = 18,692,226,339.60
  5. Step 5: Solve for x
    x = 18,692,226,339.60/157,576.61
  6. Step 6: Final answer
    x = 118,623.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.