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Finding the Fourth Proportional to 356,840.96, 535,255.20 and 86,971.52

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Solution

The fourth proportional to 356,840.96, 535,255.20 and 86,971.52 is: 130,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,840.96 : 535,255.20 = 86,971.52 : x
  2. Step 2: Convert to fraction form
    356,840.96/535,255.20 = 86,971.52/x
  3. Step 3: Cross multiply
    356,840.96x = 535,255.20 × 86,971.52
  4. Step 4: Simplify right side
    356,840.96x = 46,551,958,331.90
  5. Step 5: Solve for x
    x = 46,551,958,331.90/356,840.96
  6. Step 6: Final answer
    x = 130,455.76

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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.