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Finding the Fourth Proportional to 561,541.76, 774,925.75 and 306,892.88

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Solution

The fourth proportional to 561,541.76, 774,925.75 and 306,892.88 is: 423,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,541.76 : 774,925.75 = 306,892.88 : x
  2. Step 2: Convert to fraction form
    561,541.76/774,925.75 = 306,892.88/x
  3. Step 3: Cross multiply
    561,541.76x = 774,925.75 × 306,892.88
  4. Step 4: Simplify right side
    561,541.76x = 237,819,195,203.66
  5. Step 5: Solve for x
    x = 237,819,195,203.66/561,541.76
  6. Step 6: Final answer
    x = 423,511.15

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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.