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Finding the Fourth Proportional to 240,638.64, 361,008.16 and 72,152.16

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Solution

The fourth proportional to 240,638.64, 361,008.16 and 72,152.16 is: 108,243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,638.64 : 361,008.16 = 72,152.16 : x
  2. Step 2: Convert to fraction form
    240,638.64/361,008.16 = 72,152.16/x
  3. Step 3: Cross multiply
    240,638.64x = 361,008.16 × 72,152.16
  4. Step 4: Simplify right side
    240,638.64x = 26,047,518,521.63
  5. Step 5: Solve for x
    x = 26,047,518,521.63/240,638.64
  6. Step 6: Final answer
    x = 108,243.29

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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.