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Finding the Fourth Proportional to 153,057.65, 211,223.45 and 84,146.27

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Solution

The fourth proportional to 153,057.65, 211,223.45 and 84,146.27 is: 116,123.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,057.65 : 211,223.45 = 84,146.27 : x
  2. Step 2: Convert to fraction form
    153,057.65/211,223.45 = 84,146.27/x
  3. Step 3: Cross multiply
    153,057.65x = 211,223.45 × 84,146.27
  4. Step 4: Simplify right side
    153,057.65x = 17,773,664,608.28
  5. Step 5: Solve for x
    x = 17,773,664,608.28/153,057.65
  6. Step 6: Final answer
    x = 116,123.99

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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.