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Finding the Fourth Proportional to 69,367,947.20, 104,051,920.80 and 43,725,809.60

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Solution

The fourth proportional to 69,367,947.20, 104,051,920.80 and 43,725,809.60 is: 65,588,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,367,947.20 : 104,051,920.80 = 43,725,809.60 : x
  2. Step 2: Convert to fraction form
    69,367,947.20/104,051,920.80 = 43,725,809.60/x
  3. Step 3: Cross multiply
    69,367,947.20x = 104,051,920.80 × 43,725,809.60
  4. Step 4: Simplify right side
    69,367,947.20x = 4,549,754,477,415,080
  5. Step 5: Solve for x
    x = 4,549,754,477,415,080/69,367,947.20
  6. Step 6: Final answer
    x = 65,588,714.40

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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.