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Finding the Fourth Proportional to 93,218.64, 128,637.30 and 52,927.12

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Solution

The fourth proportional to 93,218.64, 128,637.30 and 52,927.12 is: 73,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,218.64 : 128,637.30 = 52,927.12 : x
  2. Step 2: Convert to fraction form
    93,218.64/128,637.30 = 52,927.12/x
  3. Step 3: Cross multiply
    93,218.64x = 128,637.30 × 52,927.12
  4. Step 4: Simplify right side
    93,218.64x = 6,808,400,905.75
  5. Step 5: Solve for x
    x = 6,808,400,905.75/93,218.64
  6. Step 6: Final answer
    x = 73,036.90

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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.