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Finding the Fourth Proportional to 56,376,419.80, 78,756,926.60 and 56,376,419.80

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Solution

The fourth proportional to 56,376,419.80, 78,756,926.60 and 56,376,419.80 is: 78,756,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,376,419.80 : 78,756,926.60 = 56,376,419.80 : x
  2. Step 2: Convert to fraction form
    56,376,419.80/78,756,926.60 = 56,376,419.80/x
  3. Step 3: Cross multiply
    56,376,419.80x = 78,756,926.60 × 56,376,419.80
  4. Step 4: Simplify right side
    56,376,419.80x = 4,440,033,556,159,386
  5. Step 5: Solve for x
    x = 4,440,033,556,159,386/56,376,419.80
  6. Step 6: Final answer
    x = 78,756,926.60

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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.