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Finding the Fourth Proportional to 53,998.65, 75,423.15 and 53,998.65

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Solution

The fourth proportional to 53,998.65, 75,423.15 and 53,998.65 is: 75,423.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,998.65 : 75,423.15 = 53,998.65 : x
  2. Step 2: Convert to fraction form
    53,998.65/75,423.15 = 53,998.65/x
  3. Step 3: Cross multiply
    53,998.65x = 75,423.15 × 53,998.65
  4. Step 4: Simplify right side
    53,998.65x = 4,072,748,278.75
  5. Step 5: Solve for x
    x = 4,072,748,278.75/53,998.65
  6. Step 6: Final answer
    x = 75,423.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.