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Finding the Fourth Proportional to 402,497.40, 603,746.10 and 262,529.40

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Solution

The fourth proportional to 402,497.40, 603,746.10 and 262,529.40 is: 393,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,497.40 : 603,746.10 = 262,529.40 : x
  2. Step 2: Convert to fraction form
    402,497.40/603,746.10 = 262,529.40/x
  3. Step 3: Cross multiply
    402,497.40x = 603,746.10 × 262,529.40
  4. Step 4: Simplify right side
    402,497.40x = 158,501,101,385.34
  5. Step 5: Solve for x
    x = 158,501,101,385.34/402,497.40
  6. Step 6: Final answer
    x = 393,794.10

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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.