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Finding the Fourth Proportional to 61,892,498.80, 85,407,904.20 and 34,389,486.64

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Solution

The fourth proportional to 61,892,498.80, 85,407,904.20 and 34,389,486.64 is: 47,455,411.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,892,498.80 : 85,407,904.20 = 34,389,486.64 : x
  2. Step 2: Convert to fraction form
    61,892,498.80/85,407,904.20 = 34,389,486.64/x
  3. Step 3: Cross multiply
    61,892,498.80x = 85,407,904.20 × 34,389,486.64
  4. Step 4: Simplify right side
    61,892,498.80x = 2,937,133,980,436,300
  5. Step 5: Solve for x
    x = 2,937,133,980,436,300/61,892,498.80
  6. Step 6: Final answer
    x = 47,455,411.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.