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Finding the Fourth Proportional to 99,645,409.80, 149,468,114.70 and 83,773,038.60

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Solution

The fourth proportional to 99,645,409.80, 149,468,114.70 and 83,773,038.60 is: 125,659,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645,409.80 : 149,468,114.70 = 83,773,038.60 : x
  2. Step 2: Convert to fraction form
    99,645,409.80/149,468,114.70 = 83,773,038.60/x
  3. Step 3: Cross multiply
    99,645,409.80x = 149,468,114.70 × 83,773,038.60
  4. Step 4: Simplify right side
    99,645,409.80x = 12,521,398,142,232,326
  5. Step 5: Solve for x
    x = 12,521,398,142,232,326/99,645,409.80
  6. Step 6: Final answer
    x = 125,659,557.90

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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.