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Finding the Fourth Proportional to 430,361.83, 645,541.66 and 130,841.11

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Solution

The fourth proportional to 430,361.83, 645,541.66 and 130,841.11 is: 196,261.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,361.83 : 645,541.66 = 130,841.11 : x
  2. Step 2: Convert to fraction form
    430,361.83/645,541.66 = 130,841.11/x
  3. Step 3: Cross multiply
    430,361.83x = 645,541.66 × 130,841.11
  4. Step 4: Simplify right side
    430,361.83x = 84,463,387,345.64
  5. Step 5: Solve for x
    x = 84,463,387,345.64/430,361.83
  6. Step 6: Final answer
    x = 196,261.34

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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.