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Finding the Fourth Proportional to 70,295,865.40, 105,506,783.70 and 60,722,054.20

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Solution

The fourth proportional to 70,295,865.40, 105,506,783.70 and 60,722,054.20 is: 91,137,488.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,295,865.40 : 105,506,783.70 = 60,722,054.20 : x
  2. Step 2: Convert to fraction form
    70,295,865.40/105,506,783.70 = 60,722,054.20/x
  3. Step 3: Cross multiply
    70,295,865.40x = 105,506,783.70 × 60,722,054.20
  4. Step 4: Simplify right side
    70,295,865.40x = 6,406,588,638,299,077
  5. Step 5: Solve for x
    x = 6,406,588,638,299,077/70,295,865.40
  6. Step 6: Final answer
    x = 91,137,488.70

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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.