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Finding the Fourth Proportional to 429,752,402.30, 644,628,603.45 and 429,752,402.30

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Solution

The fourth proportional to 429,752,402.30, 644,628,603.45 and 429,752,402.30 is: 644,628,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,752,402.30 : 644,628,603.45 = 429,752,402.30 : x
  2. Step 2: Convert to fraction form
    429,752,402.30/644,628,603.45 = 429,752,402.30/x
  3. Step 3: Cross multiply
    429,752,402.30x = 644,628,603.45 × 429,752,402.30
  4. Step 4: Simplify right side
    429,752,402.30x = 277,030,690,923,931,584
  5. Step 5: Solve for x
    x = 277,030,690,923,931,584/429,752,402.30
  6. Step 6: Final answer
    x = 644,628,603.45

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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.