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Finding the Fourth Proportional to 93,413.76, 128,907.54 and 50,971.38

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Solution

The fourth proportional to 93,413.76, 128,907.54 and 50,971.38 is: 70,338.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,413.76 : 128,907.54 = 50,971.38 : x
  2. Step 2: Convert to fraction form
    93,413.76/128,907.54 = 50,971.38/x
  3. Step 3: Cross multiply
    93,413.76x = 128,907.54 × 50,971.38
  4. Step 4: Simplify right side
    93,413.76x = 6,570,595,206.21
  5. Step 5: Solve for x
    x = 6,570,595,206.21/93,413.76
  6. Step 6: Final answer
    x = 70,338.62

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1.5x scale

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.