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Finding the Fourth Proportional to 139,968,695.80, 209,953,043.70 and 96,130,718.20

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Solution

The fourth proportional to 139,968,695.80, 209,953,043.70 and 96,130,718.20 is: 144,196,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,695.80 : 209,953,043.70 = 96,130,718.20 : x
  2. Step 2: Convert to fraction form
    139,968,695.80/209,953,043.70 = 96,130,718.20/x
  3. Step 3: Cross multiply
    139,968,695.80x = 209,953,043.70 × 96,130,718.20
  4. Step 4: Simplify right side
    139,968,695.80x = 20,182,936,879,156,984
  5. Step 5: Solve for x
    x = 20,182,936,879,156,984/139,968,695.80
  6. Step 6: Final answer
    x = 144,196,077.30

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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.