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Finding the Fourth Proportional to 42,580.61, 63,878.42 and 17,606.67

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Solution

The fourth proportional to 42,580.61, 63,878.42 and 17,606.67 is: 26,413.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,580.61 : 63,878.42 = 17,606.67 : x
  2. Step 2: Convert to fraction form
    42,580.61/63,878.42 = 17,606.67/x
  3. Step 3: Cross multiply
    42,580.61x = 63,878.42 × 17,606.67
  4. Step 4: Simplify right side
    42,580.61x = 1,124,686,065.53
  5. Step 5: Solve for x
    x = 1,124,686,065.53/42,580.61
  6. Step 6: Final answer
    x = 26,413.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.