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Finding the Fourth Proportional to 13,715,139.60, 19,176,001.20 and 13,715,139.60

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Solution

The fourth proportional to 13,715,139.60, 19,176,001.20 and 13,715,139.60 is: 19,176,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715,139.60 : 19,176,001.20 = 13,715,139.60 : x
  2. Step 2: Convert to fraction form
    13,715,139.60/19,176,001.20 = 13,715,139.60/x
  3. Step 3: Cross multiply
    13,715,139.60x = 19,176,001.20 × 13,715,139.60
  4. Step 4: Simplify right side
    13,715,139.60x = 263,001,533,427,767.50
  5. Step 5: Solve for x
    x = 263,001,533,427,767.50/13,715,139.60
  6. Step 6: Final answer
    x = 19,176,001.20

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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.