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Finding the Fourth Proportional to 459,626.65, 689,299.76 and 369,455.45

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Solution

The fourth proportional to 459,626.65, 689,299.76 and 369,455.45 is: 554,070.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,626.65 : 689,299.76 = 369,455.45 : x
  2. Step 2: Convert to fraction form
    459,626.65/689,299.76 = 369,455.45/x
  3. Step 3: Cross multiply
    459,626.65x = 689,299.76 × 369,455.45
  4. Step 4: Simplify right side
    459,626.65x = 254,665,550,492.83
  5. Step 5: Solve for x
    x = 254,665,550,492.83/459,626.65
  6. Step 6: Final answer
    x = 554,070.47

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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.