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Finding the Fourth Proportional to 93,103.16, 128,611.95 and 89,646.63

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Solution

The fourth proportional to 93,103.16, 128,611.95 and 89,646.63 is: 123,837.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,103.16 : 128,611.95 = 89,646.63 : x
  2. Step 2: Convert to fraction form
    93,103.16/128,611.95 = 89,646.63/x
  3. Step 3: Cross multiply
    93,103.16x = 128,611.95 × 89,646.63
  4. Step 4: Simplify right side
    93,103.16x = 11,529,627,895.23
  5. Step 5: Solve for x
    x = 11,529,627,895.23/93,103.16
  6. Step 6: Final answer
    x = 123,837.13

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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.