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Finding the Fourth Proportional to 66,420.70, 93,058.10 and 66,420.70

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Solution

The fourth proportional to 66,420.70, 93,058.10 and 66,420.70 is: 93,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.70 : 93,058.10 = 66,420.70 : x
  2. Step 2: Convert to fraction form
    66,420.70/93,058.10 = 66,420.70/x
  3. Step 3: Cross multiply
    66,420.70x = 93,058.10 × 66,420.70
  4. Step 4: Simplify right side
    66,420.70x = 6,180,984,142.67
  5. Step 5: Solve for x
    x = 6,180,984,142.67/66,420.70
  6. Step 6: Final answer
    x = 93,058.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.