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Finding the Fourth Proportional to 191,405.81, 286,897.28 and 79,024.07

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Solution

The fourth proportional to 191,405.81, 286,897.28 and 79,024.07 is: 118,448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,405.81 : 286,897.28 = 79,024.07 : x
  2. Step 2: Convert to fraction form
    191,405.81/286,897.28 = 79,024.07/x
  3. Step 3: Cross multiply
    191,405.81x = 286,897.28 × 79,024.07
  4. Step 4: Simplify right side
    191,405.81x = 22,671,788,907.92
  5. Step 5: Solve for x
    x = 22,671,788,907.92/191,405.81
  6. Step 6: Final answer
    x = 118,448.81

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1.5x scale

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.