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Finding the Fourth Proportional to 315,930.30, 473,895.45 and 315,930.30

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Solution

The fourth proportional to 315,930.30, 473,895.45 and 315,930.30 is: 473,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,930.30 : 473,895.45 = 315,930.30 : x
  2. Step 2: Convert to fraction form
    315,930.30/473,895.45 = 315,930.30/x
  3. Step 3: Cross multiply
    315,930.30x = 473,895.45 × 315,930.30
  4. Step 4: Simplify right side
    315,930.30x = 149,717,931,687.14
  5. Step 5: Solve for x
    x = 149,717,931,687.14/315,930.30
  6. Step 6: Final answer
    x = 473,895.45

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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.