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Finding the Fourth Proportional to 556,212.80, 834,319.20 and 456,485.60

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Solution

The fourth proportional to 556,212.80, 834,319.20 and 456,485.60 is: 684,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,212.80 : 834,319.20 = 456,485.60 : x
  2. Step 2: Convert to fraction form
    556,212.80/834,319.20 = 456,485.60/x
  3. Step 3: Cross multiply
    556,212.80x = 834,319.20 × 456,485.60
  4. Step 4: Simplify right side
    556,212.80x = 380,854,700,603.52
  5. Step 5: Solve for x
    x = 380,854,700,603.52/556,212.80
  6. Step 6: Final answer
    x = 684,728.40

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Similar ratio
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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.