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Finding the Fourth Proportional to 104,043.40, 156,065.10 and 83,307.40

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Solution

The fourth proportional to 104,043.40, 156,065.10 and 83,307.40 is: 124,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,043.40 : 156,065.10 = 83,307.40 : x
  2. Step 2: Convert to fraction form
    104,043.40/156,065.10 = 83,307.40/x
  3. Step 3: Cross multiply
    104,043.40x = 156,065.10 × 83,307.40
  4. Step 4: Simplify right side
    104,043.40x = 13,001,377,711.74
  5. Step 5: Solve for x
    x = 13,001,377,711.74/104,043.40
  6. Step 6: Final answer
    x = 124,961.10

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1.5x scale

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.