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Finding the Fourth Proportional to 42,919.65, 64,363.65 and 14,832.51

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Solution

The fourth proportional to 42,919.65, 64,363.65 and 14,832.51 is: 22,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,919.65 : 64,363.65 = 14,832.51 : x
  2. Step 2: Convert to fraction form
    42,919.65/64,363.65 = 14,832.51/x
  3. Step 3: Cross multiply
    42,919.65x = 64,363.65 × 14,832.51
  4. Step 4: Simplify right side
    42,919.65x = 954,674,482.26
  5. Step 5: Solve for x
    x = 954,674,482.26/42,919.65
  6. Step 6: Final answer
    x = 22,243.30

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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.