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Finding the Fourth Proportional to 515,607.51, 711,527.68 and 286,151.48

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Solution

The fourth proportional to 515,607.51, 711,527.68 and 286,151.48 is: 394,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,607.51 : 711,527.68 = 286,151.48 : x
  2. Step 2: Convert to fraction form
    515,607.51/711,527.68 = 286,151.48/x
  3. Step 3: Cross multiply
    515,607.51x = 711,527.68 × 286,151.48
  4. Step 4: Simplify right side
    515,607.51x = 203,604,698,692.97
  5. Step 5: Solve for x
    x = 203,604,698,692.97/515,607.51
  6. Step 6: Final answer
    x = 394,883.11

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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.