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Finding the Fourth Proportional to 8,710,296.64, 12,019,895.20 and 4,790,019.76

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Solution

The fourth proportional to 8,710,296.64, 12,019,895.20 and 4,790,019.76 is: 6,610,054.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710,296.64 : 12,019,895.20 = 4,790,019.76 : x
  2. Step 2: Convert to fraction form
    8,710,296.64/12,019,895.20 = 4,790,019.76/x
  3. Step 3: Cross multiply
    8,710,296.64x = 12,019,895.20 × 4,790,019.76
  4. Step 4: Simplify right side
    8,710,296.64x = 57,575,535,521,129.15
  5. Step 5: Solve for x
    x = 57,575,535,521,129.15/8,710,296.64
  6. Step 6: Final answer
    x = 6,610,054.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.