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Finding the Fourth Proportional to 616,449.56, 850,460.10 and 386,872.88

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Solution

The fourth proportional to 616,449.56, 850,460.10 and 386,872.88 is: 533,733.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,449.56 : 850,460.10 = 386,872.88 : x
  2. Step 2: Convert to fraction form
    616,449.56/850,460.10 = 386,872.88/x
  3. Step 3: Cross multiply
    616,449.56x = 850,460.10 × 386,872.88
  4. Step 4: Simplify right side
    616,449.56x = 329,019,943,959.79
  5. Step 5: Solve for x
    x = 329,019,943,959.79/616,449.56
  6. Step 6: Final answer
    x = 533,733.77

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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.