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Finding the Fourth Proportional to 56,668,920.40, 85,192,337.40 and 48,354,821.20

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Solution

The fourth proportional to 56,668,920.40, 85,192,337.40 and 48,354,821.20 is: 72,693,466.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,668,920.40 : 85,192,337.40 = 48,354,821.20 : x
  2. Step 2: Convert to fraction form
    56,668,920.40/85,192,337.40 = 48,354,821.20/x
  3. Step 3: Cross multiply
    56,668,920.40x = 85,192,337.40 × 48,354,821.20
  4. Step 4: Simplify right side
    56,668,920.40x = 4,119,460,242,587,073.50
  5. Step 5: Solve for x
    x = 4,119,460,242,587,073.50/56,668,920.40
  6. Step 6: Final answer
    x = 72,693,466.07

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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.