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Finding the Fourth Proportional to 98,931,497.80, 148,397,246.70 and 73,103,465.20

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Solution

The fourth proportional to 98,931,497.80, 148,397,246.70 and 73,103,465.20 is: 109,655,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,931,497.80 : 148,397,246.70 = 73,103,465.20 : x
  2. Step 2: Convert to fraction form
    98,931,497.80/148,397,246.70 = 73,103,465.20/x
  3. Step 3: Cross multiply
    98,931,497.80x = 148,397,246.70 × 73,103,465.20
  4. Step 4: Simplify right side
    98,931,497.80x = 10,848,352,959,909,264
  5. Step 5: Solve for x
    x = 10,848,352,959,909,264/98,931,497.80
  6. Step 6: Final answer
    x = 109,655,197.80

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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.