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Finding the Fourth Proportional to 383,303.99, 528,970.01 and 213,538.11

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Solution

The fourth proportional to 383,303.99, 528,970.01 and 213,538.11 is: 294,688.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,303.99 : 528,970.01 = 213,538.11 : x
  2. Step 2: Convert to fraction form
    383,303.99/528,970.01 = 213,538.11/x
  3. Step 3: Cross multiply
    383,303.99x = 528,970.01 × 213,538.11
  4. Step 4: Simplify right side
    383,303.99x = 112,955,256,182.08
  5. Step 5: Solve for x
    x = 112,955,256,182.08/383,303.99
  6. Step 6: Final answer
    x = 294,688.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.