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Finding the Fourth Proportional to 11,931,602.40, 17,903,624.40 and 5,200,696.80

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Solution

The fourth proportional to 11,931,602.40, 17,903,624.40 and 5,200,696.80 is: 7,803,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931,602.40 : 17,903,624.40 = 5,200,696.80 : x
  2. Step 2: Convert to fraction form
    11,931,602.40/17,903,624.40 = 5,200,696.80/x
  3. Step 3: Cross multiply
    11,931,602.40x = 17,903,624.40 × 5,200,696.80
  4. Step 4: Simplify right side
    11,931,602.40x = 93,111,322,125,481.91
  5. Step 5: Solve for x
    x = 93,111,322,125,481.91/11,931,602.40
  6. Step 6: Final answer
    x = 7,803,756.70

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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.