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Finding the Fourth Proportional to 366,912,939.60, 550,369,409.40 and 338,852,854.80

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Solution

The fourth proportional to 366,912,939.60, 550,369,409.40 and 338,852,854.80 is: 508,279,282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,912,939.60 : 550,369,409.40 = 338,852,854.80 : x
  2. Step 2: Convert to fraction form
    366,912,939.60/550,369,409.40 = 338,852,854.80/x
  3. Step 3: Cross multiply
    366,912,939.60x = 550,369,409.40 × 338,852,854.80
  4. Step 4: Simplify right side
    366,912,939.60x = 186,494,245,569,779,968
  5. Step 5: Solve for x
    x = 186,494,245,569,779,968/366,912,939.60
  6. Step 6: Final answer
    x = 508,279,282.20

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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.