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Finding the Fourth Proportional to 551,298,643.80, 826,947,965.70 and 551,298,643.80

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Solution

The fourth proportional to 551,298,643.80, 826,947,965.70 and 551,298,643.80 is: 826,947,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,298,643.80 : 826,947,965.70 = 551,298,643.80 : x
  2. Step 2: Convert to fraction form
    551,298,643.80/826,947,965.70 = 551,298,643.80/x
  3. Step 3: Cross multiply
    551,298,643.80x = 826,947,965.70 × 551,298,643.80
  4. Step 4: Simplify right side
    551,298,643.80x = 455,895,291,983,578,880
  5. Step 5: Solve for x
    x = 455,895,291,983,578,880/551,298,643.80
  6. Step 6: Final answer
    x = 826,947,965.70

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Double scale
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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.