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Finding the Fourth Proportional to 612,886,129.60, 919,329,194.40 and 536,358,625.60

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Solution

The fourth proportional to 612,886,129.60, 919,329,194.40 and 536,358,625.60 is: 804,537,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,886,129.60 : 919,329,194.40 = 536,358,625.60 : x
  2. Step 2: Convert to fraction form
    612,886,129.60/919,329,194.40 = 536,358,625.60/x
  3. Step 3: Cross multiply
    612,886,129.60x = 919,329,194.40 × 536,358,625.60
  4. Step 4: Simplify right side
    612,886,129.60x = 493,090,143,182,339,200
  5. Step 5: Solve for x
    x = 493,090,143,182,339,200/612,886,129.60
  6. Step 6: Final answer
    x = 804,537,938.40

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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.