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Finding the Fourth Proportional to 81,573.48, 112,573.80 and 45,762.98

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Solution

The fourth proportional to 81,573.48, 112,573.80 and 45,762.98 is: 63,154.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,573.48 : 112,573.80 = 45,762.98 : x
  2. Step 2: Convert to fraction form
    81,573.48/112,573.80 = 45,762.98/x
  3. Step 3: Cross multiply
    81,573.48x = 112,573.80 × 45,762.98
  4. Step 4: Simplify right side
    81,573.48x = 5,151,711,995.06
  5. Step 5: Solve for x
    x = 5,151,711,995.06/81,573.48
  6. Step 6: Final answer
    x = 63,154.25

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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.