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Finding the Fourth Proportional to 671,534.16, 926,439.48 and 399,547.68

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Solution

The fourth proportional to 671,534.16, 926,439.48 and 399,547.68 is: 551,210.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,534.16 : 926,439.48 = 399,547.68 : x
  2. Step 2: Convert to fraction form
    671,534.16/926,439.48 = 399,547.68/x
  3. Step 3: Cross multiply
    671,534.16x = 926,439.48 × 399,547.68
  4. Step 4: Simplify right side
    671,534.16x = 370,156,744,894.41
  5. Step 5: Solve for x
    x = 370,156,744,894.41/671,534.16
  6. Step 6: Final answer
    x = 551,210.60

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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.