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Finding the Fourth Proportional to 70,038.55, 96,655.44 and 39,828.79

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Solution

The fourth proportional to 70,038.55, 96,655.44 and 39,828.79 is: 54,965.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,038.55 : 96,655.44 = 39,828.79 : x
  2. Step 2: Convert to fraction form
    70,038.55/96,655.44 = 39,828.79/x
  3. Step 3: Cross multiply
    70,038.55x = 96,655.44 × 39,828.79
  4. Step 4: Simplify right side
    70,038.55x = 3,849,669,222.12
  5. Step 5: Solve for x
    x = 3,849,669,222.12/70,038.55
  6. Step 6: Final answer
    x = 54,965.00

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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.