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Finding the Fourth Proportional to 639,072,803.70, 958,609,205.55 and 524,187,069.30

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Solution

The fourth proportional to 639,072,803.70, 958,609,205.55 and 524,187,069.30 is: 786,280,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,072,803.70 : 958,609,205.55 = 524,187,069.30 : x
  2. Step 2: Convert to fraction form
    639,072,803.70/958,609,205.55 = 524,187,069.30/x
  3. Step 3: Cross multiply
    639,072,803.70x = 958,609,205.55 × 524,187,069.30
  4. Step 4: Simplify right side
    639,072,803.70x = 502,490,550,061,255,808
  5. Step 5: Solve for x
    x = 502,490,550,061,255,808/639,072,803.70
  6. Step 6: Final answer
    x = 786,280,603.95

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Double scale
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Similar ratio
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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.