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Finding the Fourth Proportional to 885,686.95, 1,222,414.85 and 554,696.34

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Solution

The fourth proportional to 885,686.95, 1,222,414.85 and 554,696.34 is: 765,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,686.95 : 1,222,414.85 = 554,696.34 : x
  2. Step 2: Convert to fraction form
    885,686.95/1,222,414.85 = 554,696.34/x
  3. Step 3: Cross multiply
    885,686.95x = 1,222,414.85 × 554,696.34
  4. Step 4: Simplify right side
    885,686.95x = 678,069,043,256.65
  5. Step 5: Solve for x
    x = 678,069,043,256.65/885,686.95
  6. Step 6: Final answer
    x = 765,585.45

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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.