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Finding the Fourth Proportional to 255,519.50, 352,428.01 and 187,513.50

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Solution

The fourth proportional to 255,519.50, 352,428.01 and 187,513.50 is: 258,630.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,519.50 : 352,428.01 = 187,513.50 : x
  2. Step 2: Convert to fraction form
    255,519.50/352,428.01 = 187,513.50/x
  3. Step 3: Cross multiply
    255,519.50x = 352,428.01 × 187,513.50
  4. Step 4: Simplify right side
    255,519.50x = 66,085,009,653.14
  5. Step 5: Solve for x
    x = 66,085,009,653.14/255,519.50
  6. Step 6: Final answer
    x = 258,630.01

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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.