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Finding the Fourth Proportional to 93,203.64, 128,633.72 and 54,973.98

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Solution

The fourth proportional to 93,203.64, 128,633.72 and 54,973.98 is: 75,871.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,203.64 : 128,633.72 = 54,973.98 : x
  2. Step 2: Convert to fraction form
    93,203.64/128,633.72 = 54,973.98/x
  3. Step 3: Cross multiply
    93,203.64x = 128,633.72 × 54,973.98
  4. Step 4: Simplify right side
    93,203.64x = 7,071,507,275.74
  5. Step 5: Solve for x
    x = 7,071,507,275.74/93,203.64
  6. Step 6: Final answer
    x = 75,871.58

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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.