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Finding the Fourth Proportional to 56,688,695.90, 79,515,339.70 and 56,688,695.90

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Solution

The fourth proportional to 56,688,695.90, 79,515,339.70 and 56,688,695.90 is: 79,515,339.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,688,695.90 : 79,515,339.70 = 56,688,695.90 : x
  2. Step 2: Convert to fraction form
    56,688,695.90/79,515,339.70 = 56,688,695.90/x
  3. Step 3: Cross multiply
    56,688,695.90x = 79,515,339.70 × 56,688,695.90
  4. Step 4: Simplify right side
    56,688,695.90x = 4,507,620,911,638,497
  5. Step 5: Solve for x
    x = 4,507,620,911,638,497/56,688,695.90
  6. Step 6: Final answer
    x = 79,515,339.70

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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.