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Finding the Fourth Proportional to 554,886,042.48, 765,129,228.84 and 353,624,250.30

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Solution

The fourth proportional to 554,886,042.48, 765,129,228.84 and 353,624,250.30 is: 487,610,480.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,886,042.48 : 765,129,228.84 = 353,624,250.30 : x
  2. Step 2: Convert to fraction form
    554,886,042.48/765,129,228.84 = 353,624,250.30/x
  3. Step 3: Cross multiply
    554,886,042.48x = 765,129,228.84 × 353,624,250.30
  4. Step 4: Simplify right side
    554,886,042.48x = 270,568,249,931,162,144
  5. Step 5: Solve for x
    x = 270,568,249,931,162,144/554,886,042.48
  6. Step 6: Final answer
    x = 487,610,480.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.