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Finding the Fourth Proportional to 70,295,891.90, 105,506,823.45 and 60,722,080.70

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Solution

The fourth proportional to 70,295,891.90, 105,506,823.45 and 60,722,080.70 is: 91,137,528.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,295,891.90 : 105,506,823.45 = 60,722,080.70 : x
  2. Step 2: Convert to fraction form
    70,295,891.90/105,506,823.45 = 60,722,080.70/x
  3. Step 3: Cross multiply
    70,295,891.90x = 105,506,823.45 × 60,722,080.70
  4. Step 4: Simplify right side
    70,295,891.90x = 6,406,593,847,931,553
  5. Step 5: Solve for x
    x = 6,406,593,847,931,553/70,295,891.90
  6. Step 6: Final answer
    x = 91,137,528.45

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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.