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Finding the Fourth Proportional to 223,603.04, 308,527.44 and 128,139.68

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Solution

The fourth proportional to 223,603.04, 308,527.44 and 128,139.68 is: 176,807.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,603.04 : 308,527.44 = 128,139.68 : x
  2. Step 2: Convert to fraction form
    223,603.04/308,527.44 = 128,139.68/x
  3. Step 3: Cross multiply
    223,603.04x = 308,527.44 × 128,139.68
  4. Step 4: Simplify right side
    223,603.04x = 39,534,607,432.82
  5. Step 5: Solve for x
    x = 39,534,607,432.82/223,603.04
  6. Step 6: Final answer
    x = 176,807.11

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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.