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Finding the Fourth Proportional to 253,499.40, 349,917.22 and 156,777.30

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Solution

The fourth proportional to 253,499.40, 349,917.22 and 156,777.30 is: 216,407.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,499.40 : 349,917.22 = 156,777.30 : x
  2. Step 2: Convert to fraction form
    253,499.40/349,917.22 = 156,777.30/x
  3. Step 3: Cross multiply
    253,499.40x = 349,917.22 × 156,777.30
  4. Step 4: Simplify right side
    253,499.40x = 54,859,076,975.11
  5. Step 5: Solve for x
    x = 54,859,076,975.11/253,499.40
  6. Step 6: Final answer
    x = 216,407.13

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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.