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Finding the Fourth Proportional to 70,680,866.40, 105,872,000.40 and 58,736,930.40

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Solution

The fourth proportional to 70,680,866.40, 105,872,000.40 and 58,736,930.40 is: 87,981,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,680,866.40 : 105,872,000.40 = 58,736,930.40 : x
  2. Step 2: Convert to fraction form
    70,680,866.40/105,872,000.40 = 58,736,930.40/x
  3. Step 3: Cross multiply
    70,680,866.40x = 105,872,000.40 × 58,736,930.40
  4. Step 4: Simplify right side
    70,680,866.40x = 6,218,596,318,803,572
  5. Step 5: Solve for x
    x = 6,218,596,318,803,572/70,680,866.40
  6. Step 6: Final answer
    x = 87,981,325.58

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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.