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Finding the Fourth Proportional to 292,547.76, 438,980.40 and 124,162.80

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Solution

The fourth proportional to 292,547.76, 438,980.40 and 124,162.80 is: 186,311.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,547.76 : 438,980.40 = 124,162.80 : x
  2. Step 2: Convert to fraction form
    292,547.76/438,980.40 = 124,162.80/x
  3. Step 3: Cross multiply
    292,547.76x = 438,980.40 × 124,162.80
  4. Step 4: Simplify right side
    292,547.76x = 54,505,035,609.12
  5. Step 5: Solve for x
    x = 54,505,035,609.12/292,547.76
  6. Step 6: Final answer
    x = 186,311.58

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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.