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Finding the Fourth Proportional to 75,136.80, 103,681.80 and 44,916.24

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Solution

The fourth proportional to 75,136.80, 103,681.80 and 44,916.24 is: 61,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,136.80 : 103,681.80 = 44,916.24 : x
  2. Step 2: Convert to fraction form
    75,136.80/103,681.80 = 44,916.24/x
  3. Step 3: Cross multiply
    75,136.80x = 103,681.80 × 44,916.24
  4. Step 4: Simplify right side
    75,136.80x = 4,656,996,612.43
  5. Step 5: Solve for x
    x = 4,656,996,612.43/75,136.80
  6. Step 6: Final answer
    x = 61,980.24

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1.5x scale

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.