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Finding the Fourth Proportional to 56,007.40, 83,913.90 and 47,259.40

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Solution

The fourth proportional to 56,007.40, 83,913.90 and 47,259.40 is: 70,807.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,007.40 : 83,913.90 = 47,259.40 : x
  2. Step 2: Convert to fraction form
    56,007.40/83,913.90 = 47,259.40/x
  3. Step 3: Cross multiply
    56,007.40x = 83,913.90 × 47,259.40
  4. Step 4: Simplify right side
    56,007.40x = 3,965,720,565.66
  5. Step 5: Solve for x
    x = 3,965,720,565.66/56,007.40
  6. Step 6: Final answer
    x = 70,807.08

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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.