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Finding the Fourth Proportional to 62,130.65, 85,728.51 and 39,473.33

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Solution

The fourth proportional to 62,130.65, 85,728.51 and 39,473.33 is: 54,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,130.65 : 85,728.51 = 39,473.33 : x
  2. Step 2: Convert to fraction form
    62,130.65/85,728.51 = 39,473.33/x
  3. Step 3: Cross multiply
    62,130.65x = 85,728.51 × 39,473.33
  4. Step 4: Simplify right side
    62,130.65x = 3,383,989,337.00
  5. Step 5: Solve for x
    x = 3,383,989,337.00/62,130.65
  6. Step 6: Final answer
    x = 54,465.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.