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Finding the Fourth Proportional to 66,464,387.60, 99,696,581.40 and 37,699,408.40

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Solution

The fourth proportional to 66,464,387.60, 99,696,581.40 and 37,699,408.40 is: 56,549,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,464,387.60 : 99,696,581.40 = 37,699,408.40 : x
  2. Step 2: Convert to fraction form
    66,464,387.60/99,696,581.40 = 37,699,408.40/x
  3. Step 3: Cross multiply
    66,464,387.60x = 99,696,581.40 × 37,699,408.40
  4. Step 4: Simplify right side
    66,464,387.60x = 3,758,502,138,282,444
  5. Step 5: Solve for x
    x = 3,758,502,138,282,444/66,464,387.60
  6. Step 6: Final answer
    x = 56,549,112.60

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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.