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Finding the Fourth Proportional to 74,916.30, 112,374.45 and 39,924.30

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Solution

The fourth proportional to 74,916.30, 112,374.45 and 39,924.30 is: 59,886.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,916.30 : 112,374.45 = 39,924.30 : x
  2. Step 2: Convert to fraction form
    74,916.30/112,374.45 = 39,924.30/x
  3. Step 3: Cross multiply
    74,916.30x = 112,374.45 × 39,924.30
  4. Step 4: Simplify right side
    74,916.30x = 4,486,471,254.14
  5. Step 5: Solve for x
    x = 4,486,471,254.14/74,916.30
  6. Step 6: Final answer
    x = 59,886.45

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1.5x scale

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.