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Finding the Fourth Proportional to 8,835,543.60, 13,253,315.40 and 7,239,908.40

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Solution

The fourth proportional to 8,835,543.60, 13,253,315.40 and 7,239,908.40 is: 10,859,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,835,543.60 : 13,253,315.40 = 7,239,908.40 : x
  2. Step 2: Convert to fraction form
    8,835,543.60/13,253,315.40 = 7,239,908.40/x
  3. Step 3: Cross multiply
    8,835,543.60x = 13,253,315.40 × 7,239,908.40
  4. Step 4: Simplify right side
    8,835,543.60x = 95,952,789,492,309.38
  5. Step 5: Solve for x
    x = 95,952,789,492,309.38/8,835,543.60
  6. Step 6: Final answer
    x = 10,859,862.60

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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.