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Finding the Fourth Proportional to 626,487,382.60, 939,731,073.90 and 533,772,579.40

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Solution

The fourth proportional to 626,487,382.60, 939,731,073.90 and 533,772,579.40 is: 800,658,869.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,487,382.60 : 939,731,073.90 = 533,772,579.40 : x
  2. Step 2: Convert to fraction form
    626,487,382.60/939,731,073.90 = 533,772,579.40/x
  3. Step 3: Cross multiply
    626,487,382.60x = 939,731,073.90 × 533,772,579.40
  4. Step 4: Simplify right side
    626,487,382.60x = 501,602,679,257,934,976
  5. Step 5: Solve for x
    x = 501,602,679,257,934,976/626,487,382.60
  6. Step 6: Final answer
    x = 800,658,869.10

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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.