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Finding the Fourth Proportional to 85,614.96, 128,402.96 and 32,312.59

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Solution

The fourth proportional to 85,614.96, 128,402.96 and 32,312.59 is: 48,461.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,614.96 : 128,402.96 = 32,312.59 : x
  2. Step 2: Convert to fraction form
    85,614.96/128,402.96 = 32,312.59/x
  3. Step 3: Cross multiply
    85,614.96x = 128,402.96 × 32,312.59
  4. Step 4: Simplify right side
    85,614.96x = 4,149,031,718.70
  5. Step 5: Solve for x
    x = 4,149,031,718.70/85,614.96
  6. Step 6: Final answer
    x = 48,461.53

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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.