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Finding the Fourth Proportional to 211,215.80, 316,823.70 and 184,971.80

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Solution

The fourth proportional to 211,215.80, 316,823.70 and 184,971.80 is: 277,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,215.80 : 316,823.70 = 184,971.80 : x
  2. Step 2: Convert to fraction form
    211,215.80/316,823.70 = 184,971.80/x
  3. Step 3: Cross multiply
    211,215.80x = 316,823.70 × 184,971.80
  4. Step 4: Simplify right side
    211,215.80x = 58,603,450,071.66
  5. Step 5: Solve for x
    x = 58,603,450,071.66/211,215.80
  6. Step 6: Final answer
    x = 277,457.70

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1.5x scale

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.