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Finding the Fourth Proportional to 190,458.54, 285,706.95 and 70,547.76

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Solution

The fourth proportional to 190,458.54, 285,706.95 and 70,547.76 is: 105,828.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,458.54 : 285,706.95 = 70,547.76 : x
  2. Step 2: Convert to fraction form
    190,458.54/285,706.95 = 70,547.76/x
  3. Step 3: Cross multiply
    190,458.54x = 285,706.95 × 70,547.76
  4. Step 4: Simplify right side
    190,458.54x = 20,155,985,074.38
  5. Step 5: Solve for x
    x = 20,155,985,074.38/190,458.54
  6. Step 6: Final answer
    x = 105,828.73

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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.