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Finding the Fourth Proportional to 253,925.16, 350,420.25 and 139,214.58

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Solution

The fourth proportional to 253,925.16, 350,420.25 and 139,214.58 is: 192,118.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,925.16 : 350,420.25 = 139,214.58 : x
  2. Step 2: Convert to fraction form
    253,925.16/350,420.25 = 139,214.58/x
  3. Step 3: Cross multiply
    253,925.16x = 350,420.25 × 139,214.58
  4. Step 4: Simplify right side
    253,925.16x = 48,783,607,927.25
  5. Step 5: Solve for x
    x = 48,783,607,927.25/253,925.16
  6. Step 6: Final answer
    x = 192,118.06

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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.