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Finding the Fourth Proportional to 70,663.92, 97,510.53 and 40,442.31

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Solution

The fourth proportional to 70,663.92, 97,510.53 and 40,442.31 is: 55,807.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,663.92 : 97,510.53 = 40,442.31 : x
  2. Step 2: Convert to fraction form
    70,663.92/97,510.53 = 40,442.31/x
  3. Step 3: Cross multiply
    70,663.92x = 97,510.53 × 40,442.31
  4. Step 4: Simplify right side
    70,663.92x = 3,943,551,082.52
  5. Step 5: Solve for x
    x = 3,943,551,082.52/70,663.92
  6. Step 6: Final answer
    x = 55,807.14

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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.