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Finding the Fourth Proportional to 151,916.40, 209,644.44 and 84,848.40

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Solution

The fourth proportional to 151,916.40, 209,644.44 and 84,848.40 is: 117,090.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,916.40 : 209,644.44 = 84,848.40 : x
  2. Step 2: Convert to fraction form
    151,916.40/209,644.44 = 84,848.40/x
  3. Step 3: Cross multiply
    151,916.40x = 209,644.44 × 84,848.40
  4. Step 4: Simplify right side
    151,916.40x = 17,787,995,302.90
  5. Step 5: Solve for x
    x = 17,787,995,302.90/151,916.40
  6. Step 6: Final answer
    x = 117,090.68

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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.