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Finding the Fourth Proportional to 611,586.60, 917,379.90 and 384,247.95

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Solution

The fourth proportional to 611,586.60, 917,379.90 and 384,247.95 is: 576,371.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,586.60 : 917,379.90 = 384,247.95 : x
  2. Step 2: Convert to fraction form
    611,586.60/917,379.90 = 384,247.95/x
  3. Step 3: Cross multiply
    611,586.60x = 917,379.90 × 384,247.95
  4. Step 4: Simplify right side
    611,586.60x = 352,501,345,946.21
  5. Step 5: Solve for x
    x = 352,501,345,946.21/611,586.60
  6. Step 6: Final answer
    x = 576,371.93

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1.5x scale

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.