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Finding the Fourth Proportional to 188,417.80, 282,324.30 and 99,555.40

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Solution

The fourth proportional to 188,417.80, 282,324.30 and 99,555.40 is: 149,173.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,417.80 : 282,324.30 = 99,555.40 : x
  2. Step 2: Convert to fraction form
    188,417.80/282,324.30 = 99,555.40/x
  3. Step 3: Cross multiply
    188,417.80x = 282,324.30 × 99,555.40
  4. Step 4: Simplify right side
    188,417.80x = 28,106,908,616.22
  5. Step 5: Solve for x
    x = 28,106,908,616.22/188,417.80
  6. Step 6: Final answer
    x = 149,173.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.