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Finding the Fourth Proportional to 70,902,051.60, 106,353,077.40 and 60,698,384.40

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Solution

The fourth proportional to 70,902,051.60, 106,353,077.40 and 60,698,384.40 is: 91,047,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902,051.60 : 106,353,077.40 = 60,698,384.40 : x
  2. Step 2: Convert to fraction form
    70,902,051.60/106,353,077.40 = 60,698,384.40/x
  3. Step 3: Cross multiply
    70,902,051.60x = 106,353,077.40 × 60,698,384.40
  4. Step 4: Simplify right side
    70,902,051.60x = 6,455,459,974,148,153
  5. Step 5: Solve for x
    x = 6,455,459,974,148,153/70,902,051.60
  6. Step 6: Final answer
    x = 91,047,576.60

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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.