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Finding the Fourth Proportional to 315,713.35, 473,458.62 and 91,013.22

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Solution

The fourth proportional to 315,713.35, 473,458.62 and 91,013.22 is: 136,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,713.35 : 473,458.62 = 91,013.22 : x
  2. Step 2: Convert to fraction form
    315,713.35/473,458.62 = 91,013.22/x
  3. Step 3: Cross multiply
    315,713.35x = 473,458.62 × 91,013.22
  4. Step 4: Simplify right side
    315,713.35x = 43,090,993,372.31
  5. Step 5: Solve for x
    x = 43,090,993,372.31/315,713.35
  6. Step 6: Final answer
    x = 136,487.72

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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.