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Finding the Fourth Proportional to 18,413.12, 25,410.60 and 10,030.16

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Solution

The fourth proportional to 18,413.12, 25,410.60 and 10,030.16 is: 13,841.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.12 : 25,410.60 = 10,030.16 : x
  2. Step 2: Convert to fraction form
    18,413.12/25,410.60 = 10,030.16/x
  3. Step 3: Cross multiply
    18,413.12x = 25,410.60 × 10,030.16
  4. Step 4: Simplify right side
    18,413.12x = 254,872,383.70
  5. Step 5: Solve for x
    x = 254,872,383.70/18,413.12
  6. Step 6: Final answer
    x = 13,841.89

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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.