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Finding the Fourth Proportional to 559,873,228.80, 839,809,843.20 and 556,472,006.40

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Solution

The fourth proportional to 559,873,228.80, 839,809,843.20 and 556,472,006.40 is: 834,708,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,873,228.80 : 839,809,843.20 = 556,472,006.40 : x
  2. Step 2: Convert to fraction form
    559,873,228.80/839,809,843.20 = 556,472,006.40/x
  3. Step 3: Cross multiply
    559,873,228.80x = 839,809,843.20 × 556,472,006.40
  4. Step 4: Simplify right side
    559,873,228.80x = 467,330,668,439,973,376
  5. Step 5: Solve for x
    x = 467,330,668,439,973,376/559,873,228.80
  6. Step 6: Final answer
    x = 834,708,009.60

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Similar ratio
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1.5x scale

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.