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Finding the Fourth Proportional to 111,444.54, 153,803.88 and 63,688.56

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Solution

The fourth proportional to 111,444.54, 153,803.88 and 63,688.56 is: 87,896.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,444.54 : 153,803.88 = 63,688.56 : x
  2. Step 2: Convert to fraction form
    111,444.54/153,803.88 = 63,688.56/x
  3. Step 3: Cross multiply
    111,444.54x = 153,803.88 × 63,688.56
  4. Step 4: Simplify right side
    111,444.54x = 9,795,547,639.61
  5. Step 5: Solve for x
    x = 9,795,547,639.61/111,444.54
  6. Step 6: Final answer
    x = 87,896.16

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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.