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Finding the Fourth Proportional to 208,031.40, 312,047.10 and 183,925.80

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Solution

The fourth proportional to 208,031.40, 312,047.10 and 183,925.80 is: 275,888.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,031.40 : 312,047.10 = 183,925.80 : x
  2. Step 2: Convert to fraction form
    208,031.40/312,047.10 = 183,925.80/x
  3. Step 3: Cross multiply
    208,031.40x = 312,047.10 × 183,925.80
  4. Step 4: Simplify right side
    208,031.40x = 57,393,512,505.18
  5. Step 5: Solve for x
    x = 57,393,512,505.18/208,031.40
  6. Step 6: Final answer
    x = 275,888.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.