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Finding the Fourth Proportional to 70,656.84, 97,478.50 and 45,521

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Solution

The fourth proportional to 70,656.84, 97,478.50 and 45,521 is: 62,800.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,656.84 : 97,478.50 = 45,521 : x
  2. Step 2: Convert to fraction form
    70,656.84/97,478.50 = 45,521/x
  3. Step 3: Cross multiply
    70,656.84x = 97,478.50 × 45,521
  4. Step 4: Simplify right side
    70,656.84x = 4,437,318,798.50
  5. Step 5: Solve for x
    x = 4,437,318,798.50/70,656.84
  6. Step 6: Final answer
    x = 62,800.98

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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.