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Finding the Fourth Proportional to 666,561,643.30, 930,890,475.50 and 666,561,643.30

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Solution

The fourth proportional to 666,561,643.30, 930,890,475.50 and 666,561,643.30 is: 930,890,475.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,561,643.30 : 930,890,475.50 = 666,561,643.30 : x
  2. Step 2: Convert to fraction form
    666,561,643.30/930,890,475.50 = 666,561,643.30/x
  3. Step 3: Cross multiply
    666,561,643.30x = 930,890,475.50 × 666,561,643.30
  4. Step 4: Simplify right side
    666,561,643.30x = 620,495,885,081,598,336
  5. Step 5: Solve for x
    x = 620,495,885,081,598,336/666,561,643.30
  6. Step 6: Final answer
    x = 930,890,475.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.