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Finding the Fourth Proportional to 93,084.80, 128,307.65 and 62,860.46

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Solution

The fourth proportional to 93,084.80, 128,307.65 and 62,860.46 is: 86,646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,084.80 : 128,307.65 = 62,860.46 : x
  2. Step 2: Convert to fraction form
    93,084.80/128,307.65 = 62,860.46/x
  3. Step 3: Cross multiply
    93,084.80x = 128,307.65 × 62,860.46
  4. Step 4: Simplify right side
    93,084.80x = 8,065,476,944.68
  5. Step 5: Solve for x
    x = 8,065,476,944.68/93,084.80
  6. Step 6: Final answer
    x = 86,646.56

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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.