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Finding the Fourth Proportional to 886,616.83, 1,223,461.84 and 499,415.31

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Solution

The fourth proportional to 886,616.83, 1,223,461.84 and 499,415.31 is: 689,154.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,616.83 : 1,223,461.84 = 499,415.31 : x
  2. Step 2: Convert to fraction form
    886,616.83/1,223,461.84 = 499,415.31/x
  3. Step 3: Cross multiply
    886,616.83x = 1,223,461.84 × 499,415.31
  4. Step 4: Simplify right side
    886,616.83x = 611,015,577,436.21
  5. Step 5: Solve for x
    x = 611,015,577,436.21/886,616.83
  6. Step 6: Final answer
    x = 689,154.05

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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.