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Finding the Fourth Proportional to 8,749,689.60, 13,124,534.40 and 7,364,006.40

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Solution

The fourth proportional to 8,749,689.60, 13,124,534.40 and 7,364,006.40 is: 11,046,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749,689.60 : 13,124,534.40 = 7,364,006.40 : x
  2. Step 2: Convert to fraction form
    8,749,689.60/13,124,534.40 = 7,364,006.40/x
  3. Step 3: Cross multiply
    8,749,689.60x = 13,124,534.40 × 7,364,006.40
  4. Step 4: Simplify right side
    8,749,689.60x = 96,649,155,318,620.17
  5. Step 5: Solve for x
    x = 96,649,155,318,620.17/8,749,689.60
  6. Step 6: Final answer
    x = 11,046,009.60

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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.