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Finding the Fourth Proportional to 66,068,051.60, 99,102,077.40 and 64,934,310.80

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Solution

The fourth proportional to 66,068,051.60, 99,102,077.40 and 64,934,310.80 is: 97,401,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,068,051.60 : 99,102,077.40 = 64,934,310.80 : x
  2. Step 2: Convert to fraction form
    66,068,051.60/99,102,077.40 = 64,934,310.80/x
  3. Step 3: Cross multiply
    66,068,051.60x = 99,102,077.40 × 64,934,310.80
  4. Step 4: Simplify right side
    66,068,051.60x = 6,435,125,094,817,256
  5. Step 5: Solve for x
    x = 6,435,125,094,817,256/66,068,051.60
  6. Step 6: Final answer
    x = 97,401,466.20

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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.