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Finding the Fourth Proportional to 317,505.63, 438,166.08 and 181,561.71

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Solution

The fourth proportional to 317,505.63, 438,166.08 and 181,561.71 is: 250,559.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,505.63 : 438,166.08 = 181,561.71 : x
  2. Step 2: Convert to fraction form
    317,505.63/438,166.08 = 181,561.71/x
  3. Step 3: Cross multiply
    317,505.63x = 438,166.08 × 181,561.71
  4. Step 4: Simplify right side
    317,505.63x = 79,554,182,748.80
  5. Step 5: Solve for x
    x = 79,554,182,748.80/317,505.63
  6. Step 6: Final answer
    x = 250,559.91

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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.