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Finding the Fourth Proportional to 8,859,397.80, 13,289,096.70 and 4,828,319.40

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Solution

The fourth proportional to 8,859,397.80, 13,289,096.70 and 4,828,319.40 is: 7,242,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859,397.80 : 13,289,096.70 = 4,828,319.40 : x
  2. Step 2: Convert to fraction form
    8,859,397.80/13,289,096.70 = 4,828,319.40/x
  3. Step 3: Cross multiply
    8,859,397.80x = 13,289,096.70 × 4,828,319.40
  4. Step 4: Simplify right side
    8,859,397.80x = 64,164,003,405,085.98
  5. Step 5: Solve for x
    x = 64,164,003,405,085.98/8,859,397.80
  6. Step 6: Final answer
    x = 7,242,479.10

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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.