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Finding the Fourth Proportional to 125,710,379.60, 188,565,569.40 and 125,710,379.60

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Solution

The fourth proportional to 125,710,379.60, 188,565,569.40 and 125,710,379.60 is: 188,565,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,710,379.60 : 188,565,569.40 = 125,710,379.60 : x
  2. Step 2: Convert to fraction form
    125,710,379.60/188,565,569.40 = 125,710,379.60/x
  3. Step 3: Cross multiply
    125,710,379.60x = 188,565,569.40 × 125,710,379.60
  4. Step 4: Simplify right side
    125,710,379.60x = 23,704,649,308,764,144
  5. Step 5: Solve for x
    x = 23,704,649,308,764,144/125,710,379.60
  6. Step 6: Final answer
    x = 188,565,569.40

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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.