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Finding the Fourth Proportional to 453,303,643.80, 679,955,465.70 and 146,815,714.20

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Solution

The fourth proportional to 453,303,643.80, 679,955,465.70 and 146,815,714.20 is: 220,223,571.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,303,643.80 : 679,955,465.70 = 146,815,714.20 : x
  2. Step 2: Convert to fraction form
    453,303,643.80/679,955,465.70 = 146,815,714.20/x
  3. Step 3: Cross multiply
    453,303,643.80x = 679,955,465.70 × 146,815,714.20
  4. Step 4: Simplify right side
    453,303,643.80x = 99,828,147,320,939,104
  5. Step 5: Solve for x
    x = 99,828,147,320,939,104/453,303,643.80
  6. Step 6: Final answer
    x = 220,223,571.30

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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.