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Finding the Fourth Proportional to 252,710.61, 348,731.50 and 139,530.93

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Solution

The fourth proportional to 252,710.61, 348,731.50 and 139,530.93 is: 192,547.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,710.61 : 348,731.50 = 139,530.93 : x
  2. Step 2: Convert to fraction form
    252,710.61/348,731.50 = 139,530.93/x
  3. Step 3: Cross multiply
    252,710.61x = 348,731.50 × 139,530.93
  4. Step 4: Simplify right side
    252,710.61x = 48,658,830,515.30
  5. Step 5: Solve for x
    x = 48,658,830,515.30/252,710.61
  6. Step 6: Final answer
    x = 192,547.64

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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.