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Finding the Fourth Proportional to 1,160,946.80, 1,738,795.80 and 688,554.80

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Solution

The fourth proportional to 1,160,946.80, 1,738,795.80 and 688,554.80 is: 1,031,275.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160,946.80 : 1,738,795.80 = 688,554.80 : x
  2. Step 2: Convert to fraction form
    1,160,946.80/1,738,795.80 = 688,554.80/x
  3. Step 3: Cross multiply
    1,160,946.80x = 1,738,795.80 × 688,554.80
  4. Step 4: Simplify right side
    1,160,946.80x = 1,197,256,194,309.84
  5. Step 5: Solve for x
    x = 1,197,256,194,309.84/1,160,946.80
  6. Step 6: Final answer
    x = 1,031,275.67

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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.