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Finding the Fourth Proportional to 125,573.70, 188,360.55 and 83,510.40

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Solution

The fourth proportional to 125,573.70, 188,360.55 and 83,510.40 is: 125,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,573.70 : 188,360.55 = 83,510.40 : x
  2. Step 2: Convert to fraction form
    125,573.70/188,360.55 = 83,510.40/x
  3. Step 3: Cross multiply
    125,573.70x = 188,360.55 × 83,510.40
  4. Step 4: Simplify right side
    125,573.70x = 15,730,064,874.72
  5. Step 5: Solve for x
    x = 15,730,064,874.72/125,573.70
  6. Step 6: Final answer
    x = 125,265.60

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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.