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Finding the Fourth Proportional to 282,407.61, 389,710.85 and 153,341.03

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Solution

The fourth proportional to 282,407.61, 389,710.85 and 153,341.03 is: 211,604.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,407.61 : 389,710.85 = 153,341.03 : x
  2. Step 2: Convert to fraction form
    282,407.61/389,710.85 = 153,341.03/x
  3. Step 3: Cross multiply
    282,407.61x = 389,710.85 × 153,341.03
  4. Step 4: Simplify right side
    282,407.61x = 59,758,663,348.75
  5. Step 5: Solve for x
    x = 59,758,663,348.75/282,407.61
  6. Step 6: Final answer
    x = 211,604.29

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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.