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Finding the Fourth Proportional to 885,778.76, 1,222,442.34 and 503,782.76

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Solution

The fourth proportional to 885,778.76, 1,222,442.34 and 503,782.76 is: 695,258.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,778.76 : 1,222,442.34 = 503,782.76 : x
  2. Step 2: Convert to fraction form
    885,778.76/1,222,442.34 = 503,782.76/x
  3. Step 3: Cross multiply
    885,778.76x = 1,222,442.34 × 503,782.76
  4. Step 4: Simplify right side
    885,778.76x = 615,845,375,986.06
  5. Step 5: Solve for x
    x = 615,845,375,986.06/885,778.76
  6. Step 6: Final answer
    x = 695,258.69

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Double scale
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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.