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Finding the Fourth Proportional to 98,804.98, 136,429.47 and 91,248.54

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Solution

The fourth proportional to 98,804.98, 136,429.47 and 91,248.54 is: 125,995.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,804.98 : 136,429.47 = 91,248.54 : x
  2. Step 2: Convert to fraction form
    98,804.98/136,429.47 = 91,248.54/x
  3. Step 3: Cross multiply
    98,804.98x = 136,429.47 × 91,248.54
  4. Step 4: Simplify right side
    98,804.98x = 12,448,989,950.47
  5. Step 5: Solve for x
    x = 12,448,989,950.47/98,804.98
  6. Step 6: Final answer
    x = 125,995.57

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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.