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Finding the Fourth Proportional to 313,393.55, 432,486.20 and 170,154.77

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Solution

The fourth proportional to 313,393.55, 432,486.20 and 170,154.77 is: 234,815.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,393.55 : 432,486.20 = 170,154.77 : x
  2. Step 2: Convert to fraction form
    313,393.55/432,486.20 = 170,154.77/x
  3. Step 3: Cross multiply
    313,393.55x = 432,486.20 × 170,154.77
  4. Step 4: Simplify right side
    313,393.55x = 73,589,588,152.13
  5. Step 5: Solve for x
    x = 73,589,588,152.13/313,393.55
  6. Step 6: Final answer
    x = 234,815.26

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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.