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Finding the Fourth Proportional to 592,870.80, 889,421.40 and 172,160.40

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Solution

The fourth proportional to 592,870.80, 889,421.40 and 172,160.40 is: 258,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,870.80 : 889,421.40 = 172,160.40 : x
  2. Step 2: Convert to fraction form
    592,870.80/889,421.40 = 172,160.40/x
  3. Step 3: Cross multiply
    592,870.80x = 889,421.40 × 172,160.40
  4. Step 4: Simplify right side
    592,870.80x = 153,123,143,992.56
  5. Step 5: Solve for x
    x = 153,123,143,992.56/592,870.80
  6. Step 6: Final answer
    x = 258,274.05

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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.