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Finding the Fourth Proportional to 125,957.60, 188,985.63 and 47,053.40

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Solution

The fourth proportional to 125,957.60, 188,985.63 and 47,053.40 is: 70,598.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,957.60 : 188,985.63 = 47,053.40 : x
  2. Step 2: Convert to fraction form
    125,957.60/188,985.63 = 47,053.40/x
  3. Step 3: Cross multiply
    125,957.60x = 188,985.63 × 47,053.40
  4. Step 4: Simplify right side
    125,957.60x = 8,892,416,442.64
  5. Step 5: Solve for x
    x = 8,892,416,442.64/125,957.60
  6. Step 6: Final answer
    x = 70,598.49

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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.