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Finding the Fourth Proportional to 93,053.84, 128,447.70 and 55,328

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Solution

The fourth proportional to 93,053.84, 128,447.70 and 55,328 is: 76,372.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,053.84 : 128,447.70 = 55,328 : x
  2. Step 2: Convert to fraction form
    93,053.84/128,447.70 = 55,328/x
  3. Step 3: Cross multiply
    93,053.84x = 128,447.70 × 55,328
  4. Step 4: Simplify right side
    93,053.84x = 7,106,754,345.60
  5. Step 5: Solve for x
    x = 7,106,754,345.60/93,053.84
  6. Step 6: Final answer
    x = 76,372.50

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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.