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Finding the Fourth Proportional to 317,901.51, 438,702.80 and 181,934.82

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Solution

The fourth proportional to 317,901.51, 438,702.80 and 181,934.82 is: 251,069.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,901.51 : 438,702.80 = 181,934.82 : x
  2. Step 2: Convert to fraction form
    317,901.51/438,702.80 = 181,934.82/x
  3. Step 3: Cross multiply
    317,901.51x = 438,702.80 × 181,934.82
  4. Step 4: Simplify right side
    317,901.51x = 79,815,314,041.82
  5. Step 5: Solve for x
    x = 79,815,314,041.82/317,901.51
  6. Step 6: Final answer
    x = 251,069.31

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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.