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Finding the Fourth Proportional to 99,663,033.60, 139,188,124.80 and 99,663,033.60

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Solution

The fourth proportional to 99,663,033.60, 139,188,124.80 and 99,663,033.60 is: 139,188,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,663,033.60 : 139,188,124.80 = 99,663,033.60 : x
  2. Step 2: Convert to fraction form
    99,663,033.60/139,188,124.80 = 99,663,033.60/x
  3. Step 3: Cross multiply
    99,663,033.60x = 139,188,124.80 × 99,663,033.60
  4. Step 4: Simplify right side
    99,663,033.60x = 13,871,910,758,663,394
  5. Step 5: Solve for x
    x = 13,871,910,758,663,394/99,663,033.60
  6. Step 6: Final answer
    x = 139,188,124.80

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1.5x scale

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.