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Finding the Fourth Proportional to 570,391.65, 855,542.93 and 149,656.59

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Solution

The fourth proportional to 570,391.65, 855,542.93 and 149,656.59 is: 224,473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,391.65 : 855,542.93 = 149,656.59 : x
  2. Step 2: Convert to fraction form
    570,391.65/855,542.93 = 149,656.59/x
  3. Step 3: Cross multiply
    570,391.65x = 855,542.93 × 149,656.59
  4. Step 4: Simplify right side
    570,391.65x = 128,037,636,754.13
  5. Step 5: Solve for x
    x = 128,037,636,754.13/570,391.65
  6. Step 6: Final answer
    x = 224,473.20

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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.