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Finding the Fourth Proportional to 66,681.52, 100,038.60 and 46,998.52

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Solution

The fourth proportional to 66,681.52, 100,038.60 and 46,998.52 is: 70,509.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,681.52 : 100,038.60 = 46,998.52 : x
  2. Step 2: Convert to fraction form
    66,681.52/100,038.60 = 46,998.52/x
  3. Step 3: Cross multiply
    66,681.52x = 100,038.60 × 46,998.52
  4. Step 4: Simplify right side
    66,681.52x = 4,701,666,142.87
  5. Step 5: Solve for x
    x = 4,701,666,142.87/66,681.52
  6. Step 6: Final answer
    x = 70,509.28

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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.