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Finding the Fourth Proportional to 127,549,578.90, 178,909,532.70 and 127,549,578.90

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Solution

The fourth proportional to 127,549,578.90, 178,909,532.70 and 127,549,578.90 is: 178,909,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,549,578.90 : 178,909,532.70 = 127,549,578.90 : x
  2. Step 2: Convert to fraction form
    127,549,578.90/178,909,532.70 = 127,549,578.90/x
  3. Step 3: Cross multiply
    127,549,578.90x = 178,909,532.70 × 127,549,578.90
  4. Step 4: Simplify right side
    127,549,578.90x = 22,819,835,557,080,780
  5. Step 5: Solve for x
    x = 22,819,835,557,080,780/127,549,578.90
  6. Step 6: Final answer
    x = 178,909,532.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.