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Finding the Fourth Proportional to 515,751.20, 711,700.98 and 286,290.44

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Solution

The fourth proportional to 515,751.20, 711,700.98 and 286,290.44 is: 395,061.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,751.20 : 711,700.98 = 286,290.44 : x
  2. Step 2: Convert to fraction form
    515,751.20/711,700.98 = 286,290.44/x
  3. Step 3: Cross multiply
    515,751.20x = 711,700.98 × 286,290.44
  4. Step 4: Simplify right side
    515,751.20x = 203,753,186,712.63
  5. Step 5: Solve for x
    x = 203,753,186,712.63/515,751.20
  6. Step 6: Final answer
    x = 395,061.00

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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.