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Finding the Fourth Proportional to 592,840.80, 889,376.40 and 172,130.40

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Solution

The fourth proportional to 592,840.80, 889,376.40 and 172,130.40 is: 258,229.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,840.80 : 889,376.40 = 172,130.40 : x
  2. Step 2: Convert to fraction form
    592,840.80/889,376.40 = 172,130.40/x
  3. Step 3: Cross multiply
    592,840.80x = 889,376.40 × 172,130.40
  4. Step 4: Simplify right side
    592,840.80x = 153,088,715,482.56
  5. Step 5: Solve for x
    x = 153,088,715,482.56/592,840.80
  6. Step 6: Final answer
    x = 258,229.05

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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.