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Finding the Fourth Proportional to 577,111.13, 865,710.21 and 172,271.36

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Solution

The fourth proportional to 577,111.13, 865,710.21 and 172,271.36 is: 258,420.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,111.13 : 865,710.21 = 172,271.36 : x
  2. Step 2: Convert to fraction form
    577,111.13/865,710.21 = 172,271.36/x
  3. Step 3: Cross multiply
    577,111.13x = 865,710.21 × 172,271.36
  4. Step 4: Simplify right side
    577,111.13x = 149,137,075,242.59
  5. Step 5: Solve for x
    x = 149,137,075,242.59/577,111.13
  6. Step 6: Final answer
    x = 258,420.03

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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.