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Finding the Fourth Proportional to 561,449.01, 774,818.75 and 306,816.60

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Solution

The fourth proportional to 561,449.01, 774,818.75 and 306,816.60 is: 423,417.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,449.01 : 774,818.75 = 306,816.60 : x
  2. Step 2: Convert to fraction form
    561,449.01/774,818.75 = 306,816.60/x
  3. Step 3: Cross multiply
    561,449.01x = 774,818.75 × 306,816.60
  4. Step 4: Simplify right side
    561,449.01x = 237,727,254,491.25
  5. Step 5: Solve for x
    x = 237,727,254,491.25/561,449.01
  6. Step 6: Final answer
    x = 423,417.35

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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.