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Finding the Fourth Proportional to 98,813.80, 147,068.09 and 98,506.60

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Solution

The fourth proportional to 98,813.80, 147,068.09 and 98,506.60 is: 146,610.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,813.80 : 147,068.09 = 98,506.60 : x
  2. Step 2: Convert to fraction form
    98,813.80/147,068.09 = 98,506.60/x
  3. Step 3: Cross multiply
    98,813.80x = 147,068.09 × 98,506.60
  4. Step 4: Simplify right side
    98,813.80x = 14,487,177,514.39
  5. Step 5: Solve for x
    x = 14,487,177,514.39/98,813.80
  6. Step 6: Final answer
    x = 146,610.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.