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Finding the Fourth Proportional to 39,298.80, 58,948.20 and 9,716.40

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Solution

The fourth proportional to 39,298.80, 58,948.20 and 9,716.40 is: 14,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,298.80 : 58,948.20 = 9,716.40 : x
  2. Step 2: Convert to fraction form
    39,298.80/58,948.20 = 9,716.40/x
  3. Step 3: Cross multiply
    39,298.80x = 58,948.20 × 9,716.40
  4. Step 4: Simplify right side
    39,298.80x = 572,764,290.48
  5. Step 5: Solve for x
    x = 572,764,290.48/39,298.80
  6. Step 6: Final answer
    x = 14,574.60

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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.