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Finding the Fourth Proportional to 93,140.66, 128,530.28 and 52,853.58

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Solution

The fourth proportional to 93,140.66, 128,530.28 and 52,853.58 is: 72,935.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,140.66 : 128,530.28 = 52,853.58 : x
  2. Step 2: Convert to fraction form
    93,140.66/128,530.28 = 52,853.58/x
  3. Step 3: Cross multiply
    93,140.66x = 128,530.28 × 52,853.58
  4. Step 4: Simplify right side
    93,140.66x = 6,793,285,436.40
  5. Step 5: Solve for x
    x = 6,793,285,436.40/93,140.66
  6. Step 6: Final answer
    x = 72,935.77

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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.