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Finding the Fourth Proportional to 56,775.80, 78,350.60 and 32,916.32

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Solution

The fourth proportional to 56,775.80, 78,350.60 and 32,916.32 is: 45,424.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,775.80 : 78,350.60 = 32,916.32 : x
  2. Step 2: Convert to fraction form
    56,775.80/78,350.60 = 32,916.32/x
  3. Step 3: Cross multiply
    56,775.80x = 78,350.60 × 32,916.32
  4. Step 4: Simplify right side
    56,775.80x = 2,579,013,421.79
  5. Step 5: Solve for x
    x = 2,579,013,421.79/56,775.80
  6. Step 6: Final answer
    x = 45,424.52

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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.