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Finding the Fourth Proportional to 315,400.06, 435,187.11 and 181,238.14

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Solution

The fourth proportional to 315,400.06, 435,187.11 and 181,238.14 is: 250,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,400.06 : 435,187.11 = 181,238.14 : x
  2. Step 2: Convert to fraction form
    315,400.06/435,187.11 = 181,238.14/x
  3. Step 3: Cross multiply
    315,400.06x = 435,187.11 × 181,238.14
  4. Step 4: Simplify right side
    315,400.06x = 78,872,502,368.38
  5. Step 5: Solve for x
    x = 78,872,502,368.38/315,400.06
  6. Step 6: Final answer
    x = 250,071.30

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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.