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Finding the Fourth Proportional to 289,476.64, 399,477.88 and 176,299.39

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Solution

The fourth proportional to 289,476.64, 399,477.88 and 176,299.39 is: 243,293.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,476.64 : 399,477.88 = 176,299.39 : x
  2. Step 2: Convert to fraction form
    289,476.64/399,477.88 = 176,299.39/x
  3. Step 3: Cross multiply
    289,476.64x = 399,477.88 × 176,299.39
  4. Step 4: Simplify right side
    289,476.64x = 70,427,704,043.47
  5. Step 5: Solve for x
    x = 70,427,704,043.47/289,476.64
  6. Step 6: Final answer
    x = 243,293.22

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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.