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Finding the Fourth Proportional to 153,323.83, 211,497.20 and 99,644.60

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Solution

The fourth proportional to 153,323.83, 211,497.20 and 99,644.60 is: 137,451.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,323.83 : 211,497.20 = 99,644.60 : x
  2. Step 2: Convert to fraction form
    153,323.83/211,497.20 = 99,644.60/x
  3. Step 3: Cross multiply
    153,323.83x = 211,497.20 × 99,644.60
  4. Step 4: Simplify right side
    153,323.83x = 21,074,553,615.49
  5. Step 5: Solve for x
    x = 21,074,553,615.49/153,323.83
  6. Step 6: Final answer
    x = 137,451.26

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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.