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Finding the Fourth Proportional to 125,913.80, 188,798.70 and 47,030.60

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Solution

The fourth proportional to 125,913.80, 188,798.70 and 47,030.60 is: 70,519.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,913.80 : 188,798.70 = 47,030.60 : x
  2. Step 2: Convert to fraction form
    125,913.80/188,798.70 = 47,030.60/x
  3. Step 3: Cross multiply
    125,913.80x = 188,798.70 × 47,030.60
  4. Step 4: Simplify right side
    125,913.80x = 8,879,316,140.22
  5. Step 5: Solve for x
    x = 8,879,316,140.22/125,913.80
  6. Step 6: Final answer
    x = 70,519.01

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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.