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Finding the Fourth Proportional to 93,261.76, 128,702.72 and 50,820.32

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Solution

The fourth proportional to 93,261.76, 128,702.72 and 50,820.32 is: 70,132.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,261.76 : 128,702.72 = 50,820.32 : x
  2. Step 2: Convert to fraction form
    93,261.76/128,702.72 = 50,820.32/x
  3. Step 3: Cross multiply
    93,261.76x = 128,702.72 × 50,820.32
  4. Step 4: Simplify right side
    93,261.76x = 6,540,713,415.27
  5. Step 5: Solve for x
    x = 6,540,713,415.27/93,261.76
  6. Step 6: Final answer
    x = 70,132.85

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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.