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Finding the Fourth Proportional to 98,653.59, 136,143.44 and 56,211.21

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Solution

The fourth proportional to 98,653.59, 136,143.44 and 56,211.21 is: 77,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,653.59 : 136,143.44 = 56,211.21 : x
  2. Step 2: Convert to fraction form
    98,653.59/136,143.44 = 56,211.21/x
  3. Step 3: Cross multiply
    98,653.59x = 136,143.44 × 56,211.21
  4. Step 4: Simplify right side
    98,653.59x = 7,652,787,495.96
  5. Step 5: Solve for x
    x = 7,652,787,495.96/98,653.59
  6. Step 6: Final answer
    x = 77,572.32

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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.