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Finding the Fourth Proportional to 559,872,434.80, 839,808,652.20 and 515,656,543.60

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Solution

The fourth proportional to 559,872,434.80, 839,808,652.20 and 515,656,543.60 is: 773,484,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,872,434.80 : 839,808,652.20 = 515,656,543.60 : x
  2. Step 2: Convert to fraction form
    559,872,434.80/839,808,652.20 = 515,656,543.60/x
  3. Step 3: Cross multiply
    559,872,434.80x = 839,808,652.20 × 515,656,543.60
  4. Step 4: Simplify right side
    559,872,434.80x = 433,052,826,878,826,560
  5. Step 5: Solve for x
    x = 433,052,826,878,826,560/559,872,434.80
  6. Step 6: Final answer
    x = 773,484,815.40

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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.