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Finding the Fourth Proportional to 64,482,948.60, 96,598,451.70 and 38,847,809.40

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Solution

The fourth proportional to 64,482,948.60, 96,598,451.70 and 38,847,809.40 is: 58,195,822.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,482,948.60 : 96,598,451.70 = 38,847,809.40 : x
  2. Step 2: Convert to fraction form
    64,482,948.60/96,598,451.70 = 38,847,809.40/x
  3. Step 3: Cross multiply
    64,482,948.60x = 96,598,451.70 × 38,847,809.40
  4. Step 4: Simplify right side
    64,482,948.60x = 3,752,638,239,976,706
  5. Step 5: Solve for x
    x = 3,752,638,239,976,706/64,482,948.60
  6. Step 6: Final answer
    x = 58,195,822.64

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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.