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Finding the Fourth Proportional to 98,857.53, 136,433.16 and 56,422.44

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Solution

The fourth proportional to 98,857.53, 136,433.16 and 56,422.44 is: 77,868.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,857.53 : 136,433.16 = 56,422.44 : x
  2. Step 2: Convert to fraction form
    98,857.53/136,433.16 = 56,422.44/x
  3. Step 3: Cross multiply
    98,857.53x = 136,433.16 × 56,422.44
  4. Step 4: Simplify right side
    98,857.53x = 7,697,891,784.11
  5. Step 5: Solve for x
    x = 7,697,891,784.11/98,857.53
  6. Step 6: Final answer
    x = 77,868.54

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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.