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Finding the Fourth Proportional to 282,291.83, 389,563.09 and 153,230.21

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Solution

The fourth proportional to 282,291.83, 389,563.09 and 153,230.21 is: 211,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,291.83 : 389,563.09 = 153,230.21 : x
  2. Step 2: Convert to fraction form
    282,291.83/389,563.09 = 153,230.21/x
  3. Step 3: Cross multiply
    282,291.83x = 389,563.09 × 153,230.21
  4. Step 4: Simplify right side
    282,291.83x = 59,692,835,254.39
  5. Step 5: Solve for x
    x = 59,692,835,254.39/282,291.83
  6. Step 6: Final answer
    x = 211,457.90

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1.5x scale

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.