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Finding the Fourth Proportional to 416,488.80, 624,587.40 and 216,742.80

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Solution

The fourth proportional to 416,488.80, 624,587.40 and 216,742.80 is: 325,038.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,488.80 : 624,587.40 = 216,742.80 : x
  2. Step 2: Convert to fraction form
    416,488.80/624,587.40 = 216,742.80/x
  3. Step 3: Cross multiply
    416,488.80x = 624,587.40 × 216,742.80
  4. Step 4: Simplify right side
    416,488.80x = 135,374,821,920.72
  5. Step 5: Solve for x
    x = 135,374,821,920.72/416,488.80
  6. Step 6: Final answer
    x = 325,038.32

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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.