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Finding the Fourth Proportional to 74,980.80, 112,438.80 and 37,526.40

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Solution

The fourth proportional to 74,980.80, 112,438.80 and 37,526.40 is: 56,273.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,980.80 : 112,438.80 = 37,526.40 : x
  2. Step 2: Convert to fraction form
    74,980.80/112,438.80 = 37,526.40/x
  3. Step 3: Cross multiply
    74,980.80x = 112,438.80 × 37,526.40
  4. Step 4: Simplify right side
    74,980.80x = 4,219,423,384.32
  5. Step 5: Solve for x
    x = 4,219,423,384.32/74,980.80
  6. Step 6: Final answer
    x = 56,273.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.