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Finding the Fourth Proportional to 56,896,429.20, 85,344,643.80 and 56,896,429.20

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Solution

The fourth proportional to 56,896,429.20, 85,344,643.80 and 56,896,429.20 is: 85,344,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,896,429.20 : 85,344,643.80 = 56,896,429.20 : x
  2. Step 2: Convert to fraction form
    56,896,429.20/85,344,643.80 = 56,896,429.20/x
  3. Step 3: Cross multiply
    56,896,429.20x = 85,344,643.80 × 56,896,429.20
  4. Step 4: Simplify right side
    56,896,429.20x = 4,855,805,483,565,919
  5. Step 5: Solve for x
    x = 4,855,805,483,565,919/56,896,429.20
  6. Step 6: Final answer
    x = 85,344,643.80

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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.