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Finding the Fourth Proportional to 99,692,951.70, 139,771,686.30 and 99,692,951.70

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Solution

The fourth proportional to 99,692,951.70, 139,771,686.30 and 99,692,951.70 is: 139,771,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,692,951.70 : 139,771,686.30 = 99,692,951.70 : x
  2. Step 2: Convert to fraction form
    99,692,951.70/139,771,686.30 = 99,692,951.70/x
  3. Step 3: Cross multiply
    99,692,951.70x = 139,771,686.30 × 99,692,951.70
  4. Step 4: Simplify right side
    99,692,951.70x = 13,934,251,971,333,454
  5. Step 5: Solve for x
    x = 13,934,251,971,333,454/99,692,951.70
  6. Step 6: Final answer
    x = 139,771,686.30

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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.