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Finding the Fourth Proportional to 881,169, 1,216,073.36 and 499,198.92

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Solution

The fourth proportional to 881,169, 1,216,073.36 and 499,198.92 is: 688,928.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,169 : 1,216,073.36 = 499,198.92 : x
  2. Step 2: Convert to fraction form
    881,169/1,216,073.36 = 499,198.92/x
  3. Step 3: Cross multiply
    881,169x = 1,216,073.36 × 499,198.92
  4. Step 4: Simplify right side
    881,169x = 607,062,507,952.77
  5. Step 5: Solve for x
    x = 607,062,507,952.77/881,169
  6. Step 6: Final answer
    x = 688,928.58

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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.