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Finding the Fourth Proportional to 313,281.48, 432,316.86 and 170,038.45

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Solution

The fourth proportional to 313,281.48, 432,316.86 and 170,038.45 is: 234,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,281.48 : 432,316.86 = 170,038.45 : x
  2. Step 2: Convert to fraction form
    313,281.48/432,316.86 = 170,038.45/x
  3. Step 3: Cross multiply
    313,281.48x = 432,316.86 × 170,038.45
  4. Step 4: Simplify right side
    313,281.48x = 73,510,488,783.27
  5. Step 5: Solve for x
    x = 73,510,488,783.27/313,281.48
  6. Step 6: Final answer
    x = 234,646.77

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1.5x scale

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.