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Finding the Fourth Proportional to 70,875.86, 97,717.47 and 58,082.18

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Solution

The fourth proportional to 70,875.86, 97,717.47 and 58,082.18 is: 80,078.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,875.86 : 97,717.47 = 58,082.18 : x
  2. Step 2: Convert to fraction form
    70,875.86/97,717.47 = 58,082.18/x
  3. Step 3: Cross multiply
    70,875.86x = 97,717.47 × 58,082.18
  4. Step 4: Simplify right side
    70,875.86x = 5,675,643,681.68
  5. Step 5: Solve for x
    x = 5,675,643,681.68/70,875.86
  6. Step 6: Final answer
    x = 80,078.66

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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.