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Finding the Fourth Proportional to 111,572.93, 153,970.53 and 61,271.93

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Solution

The fourth proportional to 111,572.93, 153,970.53 and 61,271.93 is: 84,555.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,572.93 : 153,970.53 = 61,271.93 : x
  2. Step 2: Convert to fraction form
    111,572.93/153,970.53 = 61,271.93/x
  3. Step 3: Cross multiply
    111,572.93x = 153,970.53 × 61,271.93
  4. Step 4: Simplify right side
    111,572.93x = 9,434,071,536.22
  5. Step 5: Solve for x
    x = 9,434,071,536.22/111,572.93
  6. Step 6: Final answer
    x = 84,555.20

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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.