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Finding the Fourth Proportional to 605,612.30, 907,434.30 and 520,975.40

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Solution

The fourth proportional to 605,612.30, 907,434.30 and 520,975.40 is: 780,616.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,612.30 : 907,434.30 = 520,975.40 : x
  2. Step 2: Convert to fraction form
    605,612.30/907,434.30 = 520,975.40/x
  3. Step 3: Cross multiply
    605,612.30x = 907,434.30 × 520,975.40
  4. Step 4: Simplify right side
    605,612.30x = 472,750,947,416.22
  5. Step 5: Solve for x
    x = 472,750,947,416.22/605,612.30
  6. Step 6: Final answer
    x = 780,616.49

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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.