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Finding the Fourth Proportional to 438,123.25, 604,610.12 and 236,919.25

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Solution

The fourth proportional to 438,123.25, 604,610.12 and 236,919.25 is: 326,948.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,123.25 : 604,610.12 = 236,919.25 : x
  2. Step 2: Convert to fraction form
    438,123.25/604,610.12 = 236,919.25/x
  3. Step 3: Cross multiply
    438,123.25x = 604,610.12 × 236,919.25
  4. Step 4: Simplify right side
    438,123.25x = 143,243,776,172.81
  5. Step 5: Solve for x
    x = 143,243,776,172.81/438,123.25
  6. Step 6: Final answer
    x = 326,948.58

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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.