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Finding the Fourth Proportional to 113,878.90, 170,814.30 and 51,549.40

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Solution

The fourth proportional to 113,878.90, 170,814.30 and 51,549.40 is: 77,322.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,878.90 : 170,814.30 = 51,549.40 : x
  2. Step 2: Convert to fraction form
    113,878.90/170,814.30 = 51,549.40/x
  3. Step 3: Cross multiply
    113,878.90x = 170,814.30 × 51,549.40
  4. Step 4: Simplify right side
    113,878.90x = 8,805,374,676.42
  5. Step 5: Solve for x
    x = 8,805,374,676.42/113,878.90
  6. Step 6: Final answer
    x = 77,322.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.