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Finding the Fourth Proportional to 98,950.80, 136,557.60 and 56,523.12

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Solution

The fourth proportional to 98,950.80, 136,557.60 and 56,523.12 is: 78,005.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,950.80 : 136,557.60 = 56,523.12 : x
  2. Step 2: Convert to fraction form
    98,950.80/136,557.60 = 56,523.12/x
  3. Step 3: Cross multiply
    98,950.80x = 136,557.60 × 56,523.12
  4. Step 4: Simplify right side
    98,950.80x = 7,718,661,611.71
  5. Step 5: Solve for x
    x = 7,718,661,611.71/98,950.80
  6. Step 6: Final answer
    x = 78,005.05

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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.