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Finding the Fourth Proportional to 70,762,482.90, 97,656,245.87 and 42,513,495.98

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Solution

The fourth proportional to 70,762,482.90, 97,656,245.87 and 42,513,495.98 is: 58,671,039.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,762,482.90 : 97,656,245.87 = 42,513,495.98 : x
  2. Step 2: Convert to fraction form
    70,762,482.90/97,656,245.87 = 42,513,495.98/x
  3. Step 3: Cross multiply
    70,762,482.90x = 97,656,245.87 × 42,513,495.98
  4. Step 4: Simplify right side
    70,762,482.90x = 4,151,708,415,515,288
  5. Step 5: Solve for x
    x = 4,151,708,415,515,288/70,762,482.90
  6. Step 6: Final answer
    x = 58,671,039.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.