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Finding the Fourth Proportional to 686,667.60, 1,027,668.60 and 602,686.80

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Solution

The fourth proportional to 686,667.60, 1,027,668.60 and 602,686.80 is: 901,982.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,667.60 : 1,027,668.60 = 602,686.80 : x
  2. Step 2: Convert to fraction form
    686,667.60/1,027,668.60 = 602,686.80/x
  3. Step 3: Cross multiply
    686,667.60x = 1,027,668.60 × 602,686.80
  4. Step 4: Simplify right side
    686,667.60x = 619,362,299,994.48
  5. Step 5: Solve for x
    x = 619,362,299,994.48/686,667.60
  6. Step 6: Final answer
    x = 901,982.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.