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Finding the Fourth Proportional to 515,033.19, 710,747.34 and 285,606.63

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Solution

The fourth proportional to 515,033.19, 710,747.34 and 285,606.63 is: 394,138.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,033.19 : 710,747.34 = 285,606.63 : x
  2. Step 2: Convert to fraction form
    515,033.19/710,747.34 = 285,606.63/x
  3. Step 3: Cross multiply
    515,033.19x = 710,747.34 × 285,606.63
  4. Step 4: Simplify right side
    515,033.19x = 202,994,152,558.86
  5. Step 5: Solve for x
    x = 202,994,152,558.86/515,033.19
  6. Step 6: Final answer
    x = 394,138.00

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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.