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Finding the Fourth Proportional to 577,413.90, 866,111.40 and 172,607.10

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Solution

The fourth proportional to 577,413.90, 866,111.40 and 172,607.10 is: 258,907.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,413.90 : 866,111.40 = 172,607.10 : x
  2. Step 2: Convert to fraction form
    577,413.90/866,111.40 = 172,607.10/x
  3. Step 3: Cross multiply
    577,413.90x = 866,111.40 × 172,607.10
  4. Step 4: Simplify right side
    577,413.90x = 149,496,977,030.94
  5. Step 5: Solve for x
    x = 149,496,977,030.94/577,413.90
  6. Step 6: Final answer
    x = 258,907.83

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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.