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Finding the Fourth Proportional to 58,362.64, 80,428.08 and 42,421.84

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Solution

The fourth proportional to 58,362.64, 80,428.08 and 42,421.84 is: 58,460.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,362.64 : 80,428.08 = 42,421.84 : x
  2. Step 2: Convert to fraction form
    58,362.64/80,428.08 = 42,421.84/x
  3. Step 3: Cross multiply
    58,362.64x = 80,428.08 × 42,421.84
  4. Step 4: Simplify right side
    58,362.64x = 3,411,907,141.27
  5. Step 5: Solve for x
    x = 3,411,907,141.27/58,362.64
  6. Step 6: Final answer
    x = 58,460.47

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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.