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Finding the Fourth Proportional to 46,978.74, 64,832.70 and 28,112.22

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Solution

The fourth proportional to 46,978.74, 64,832.70 and 28,112.22 is: 38,796.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,978.74 : 64,832.70 = 28,112.22 : x
  2. Step 2: Convert to fraction form
    46,978.74/64,832.70 = 28,112.22/x
  3. Step 3: Cross multiply
    46,978.74x = 64,832.70 × 28,112.22
  4. Step 4: Simplify right side
    46,978.74x = 1,822,591,125.59
  5. Step 5: Solve for x
    x = 1,822,591,125.59/46,978.74
  6. Step 6: Final answer
    x = 38,796.08

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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.