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Finding the Fourth Proportional to 112,303.17, 154,978.74 and 61,316.01

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Solution

The fourth proportional to 112,303.17, 154,978.74 and 61,316.01 is: 84,616.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,303.17 : 154,978.74 = 61,316.01 : x
  2. Step 2: Convert to fraction form
    112,303.17/154,978.74 = 61,316.01/x
  3. Step 3: Cross multiply
    112,303.17x = 154,978.74 × 61,316.01
  4. Step 4: Simplify right side
    112,303.17x = 9,502,677,971.63
  5. Step 5: Solve for x
    x = 9,502,677,971.63/112,303.17
  6. Step 6: Final answer
    x = 84,616.29

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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.