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Finding the Fourth Proportional to 370,836.64, 556,009.12 and 134,148.16

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Solution

The fourth proportional to 370,836.64, 556,009.12 and 134,148.16 is: 201,133.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,836.64 : 556,009.12 = 134,148.16 : x
  2. Step 2: Convert to fraction form
    370,836.64/556,009.12 = 134,148.16/x
  3. Step 3: Cross multiply
    370,836.64x = 556,009.12 × 134,148.16
  4. Step 4: Simplify right side
    370,836.64x = 74,587,600,391.22
  5. Step 5: Solve for x
    x = 74,587,600,391.22/370,836.64
  6. Step 6: Final answer
    x = 201,133.31

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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.