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Finding the Fourth Proportional to 191,121.01, 286,902.98 and 102,547.51

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Solution

The fourth proportional to 191,121.01, 286,902.98 and 102,547.51 is: 153,940.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,121.01 : 286,902.98 = 102,547.51 : x
  2. Step 2: Convert to fraction form
    191,121.01/286,902.98 = 102,547.51/x
  3. Step 3: Cross multiply
    191,121.01x = 286,902.98 × 102,547.51
  4. Step 4: Simplify right side
    191,121.01x = 29,421,186,441.02
  5. Step 5: Solve for x
    x = 29,421,186,441.02/191,121.01
  6. Step 6: Final answer
    x = 153,940.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.