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Finding the Fourth Proportional to 605,659.20, 909,363.60 and 456,943.20

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Solution

The fourth proportional to 605,659.20, 909,363.60 and 456,943.20 is: 686,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,659.20 : 909,363.60 = 456,943.20 : x
  2. Step 2: Convert to fraction form
    605,659.20/909,363.60 = 456,943.20/x
  3. Step 3: Cross multiply
    605,659.20x = 909,363.60 × 456,943.20
  4. Step 4: Simplify right side
    605,659.20x = 415,527,513,347.52
  5. Step 5: Solve for x
    x = 415,527,513,347.52/605,659.20
  6. Step 6: Final answer
    x = 686,074.80

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1.5x scale

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.