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Finding the Fourth Proportional to 555,005.16, 832,509.18 and 134,280.36

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Solution

The fourth proportional to 555,005.16, 832,509.18 and 134,280.36 is: 201,420.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,005.16 : 832,509.18 = 134,280.36 : x
  2. Step 2: Convert to fraction form
    555,005.16/832,509.18 = 134,280.36/x
  3. Step 3: Cross multiply
    555,005.16x = 832,509.18 × 134,280.36
  4. Step 4: Simplify right side
    555,005.16x = 111,789,632,393.71
  5. Step 5: Solve for x
    x = 111,789,632,393.71/555,005.16
  6. Step 6: Final answer
    x = 201,420.89

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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.