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Finding the Fourth Proportional to 153,555.78, 211,826.01 and 105,726.09

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Solution

The fourth proportional to 153,555.78, 211,826.01 and 105,726.09 is: 145,846.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,555.78 : 211,826.01 = 105,726.09 : x
  2. Step 2: Convert to fraction form
    153,555.78/211,826.01 = 105,726.09/x
  3. Step 3: Cross multiply
    153,555.78x = 211,826.01 × 105,726.09
  4. Step 4: Simplify right side
    153,555.78x = 22,395,535,797.60
  5. Step 5: Solve for x
    x = 22,395,535,797.60/153,555.78
  6. Step 6: Final answer
    x = 145,846.26

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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.