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Finding the Fourth Proportional to 317,440.89, 438,081.06 and 174,206.06

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Solution

The fourth proportional to 317,440.89, 438,081.06 and 174,206.06 is: 240,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,440.89 : 438,081.06 = 174,206.06 : x
  2. Step 2: Convert to fraction form
    317,440.89/438,081.06 = 174,206.06/x
  3. Step 3: Cross multiply
    317,440.89x = 438,081.06 × 174,206.06
  4. Step 4: Simplify right side
    317,440.89x = 76,316,375,528.90
  5. Step 5: Solve for x
    x = 76,316,375,528.90/317,440.89
  6. Step 6: Final answer
    x = 240,411.30

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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.