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Finding the Fourth Proportional to 70,261.99, 96,963.85 and 38,430.89

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Solution

The fourth proportional to 70,261.99, 96,963.85 and 38,430.89 is: 53,035.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,261.99 : 96,963.85 = 38,430.89 : x
  2. Step 2: Convert to fraction form
    70,261.99/96,963.85 = 38,430.89/x
  3. Step 3: Cross multiply
    70,261.99x = 96,963.85 × 38,430.89
  4. Step 4: Simplify right side
    70,261.99x = 3,726,406,980.16
  5. Step 5: Solve for x
    x = 3,726,406,980.16/70,261.99
  6. Step 6: Final answer
    x = 53,035.89

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1.5x scale

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.