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Finding the Fourth Proportional to 98,975.79, 136,585.44 and 53,653.86

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Solution

The fourth proportional to 98,975.79, 136,585.44 and 53,653.86 is: 74,041.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,975.79 : 136,585.44 = 53,653.86 : x
  2. Step 2: Convert to fraction form
    98,975.79/136,585.44 = 53,653.86/x
  3. Step 3: Cross multiply
    98,975.79x = 136,585.44 × 53,653.86
  4. Step 4: Simplify right side
    98,975.79x = 7,328,336,075.80
  5. Step 5: Solve for x
    x = 7,328,336,075.80/98,975.79
  6. Step 6: Final answer
    x = 74,041.70

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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.