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Finding the Third Proportional to 162,064 and 256,415

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Solution

The third proportional to 162,064 and 256,415 is: 405,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,064 : 256,415 = 256,415 : x
  2. Step 2: Convert to fraction form
    162,064/256,415 = 256,415/x
  3. Step 3: Cross multiply
    162,064x = 256,415 × 256,415
  4. Step 4: Simplify right side
    162,064x = 65,748,652,225
  5. Step 5: Solve for x
    x = 65,748,652,225/162,064
  6. Step 6: Final answer
    x = 405,695.60

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.