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Finding the Fourth Proportional to 107,547.71, 148,427.66 and 61,611.71

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Solution

The fourth proportional to 107,547.71, 148,427.66 and 61,611.71 is: 85,030.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,547.71 : 148,427.66 = 61,611.71 : x
  2. Step 2: Convert to fraction form
    107,547.71/148,427.66 = 61,611.71/x
  3. Step 3: Cross multiply
    107,547.71x = 148,427.66 × 61,611.71
  4. Step 4: Simplify right side
    107,547.71x = 9,144,881,943.90
  5. Step 5: Solve for x
    x = 9,144,881,943.90/107,547.71
  6. Step 6: Final answer
    x = 85,030.93

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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.