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Finding the Fourth Proportional to 251,614.40, 347,228.44 and 138,444.40

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Solution

The fourth proportional to 251,614.40, 347,228.44 and 138,444.40 is: 191,053.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,614.40 : 347,228.44 = 138,444.40 : x
  2. Step 2: Convert to fraction form
    251,614.40/347,228.44 = 138,444.40/x
  3. Step 3: Cross multiply
    251,614.40x = 347,228.44 × 138,444.40
  4. Step 4: Simplify right side
    251,614.40x = 48,071,833,038.74
  5. Step 5: Solve for x
    x = 48,071,833,038.74/251,614.40
  6. Step 6: Final answer
    x = 191,053.58

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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.