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Finding the Fourth Proportional to 583,890,700.60, 805,766,266.72 and 315,966,344.30

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Solution

The fourth proportional to 583,890,700.60, 805,766,266.72 and 315,966,344.30 is: 436,031,985.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,890,700.60 : 805,766,266.72 = 315,966,344.30 : x
  2. Step 2: Convert to fraction form
    583,890,700.60/805,766,266.72 = 315,966,344.30/x
  3. Step 3: Cross multiply
    583,890,700.60x = 805,766,266.72 × 315,966,344.30
  4. Step 4: Simplify right side
    583,890,700.60x = 254,595,021,655,164,896
  5. Step 5: Solve for x
    x = 254,595,021,655,164,896/583,890,700.60
  6. Step 6: Final answer
    x = 436,031,985.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.