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Finding the Fourth Proportional to 515,300.44, 711,114.70 and 288,946.04

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Solution

The fourth proportional to 515,300.44, 711,114.70 and 288,946.04 is: 398,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,300.44 : 711,114.70 = 288,946.04 : x
  2. Step 2: Convert to fraction form
    515,300.44/711,114.70 = 288,946.04/x
  3. Step 3: Cross multiply
    515,300.44x = 711,114.70 × 288,946.04
  4. Step 4: Simplify right side
    515,300.44x = 205,473,776,550.79
  5. Step 5: Solve for x
    x = 205,473,776,550.79/515,300.44
  6. Step 6: Final answer
    x = 398,745.59

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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.