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Finding the Fourth Proportional to 621,606.60, 933,101.10 and 385,216.20

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Solution

The fourth proportional to 621,606.60, 933,101.10 and 385,216.20 is: 578,252.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,606.60 : 933,101.10 = 385,216.20 : x
  2. Step 2: Convert to fraction form
    621,606.60/933,101.10 = 385,216.20/x
  3. Step 3: Cross multiply
    621,606.60x = 933,101.10 × 385,216.20
  4. Step 4: Simplify right side
    621,606.60x = 359,445,659,957.82
  5. Step 5: Solve for x
    x = 359,445,659,957.82/621,606.60
  6. Step 6: Final answer
    x = 578,252.64

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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.