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Finding the Fourth Proportional to 607,918.68, 839,031.95 and 353,417.49

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Solution

The fourth proportional to 607,918.68, 839,031.95 and 353,417.49 is: 487,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,918.68 : 839,031.95 = 353,417.49 : x
  2. Step 2: Convert to fraction form
    607,918.68/839,031.95 = 353,417.49/x
  3. Step 3: Cross multiply
    607,918.68x = 839,031.95 × 353,417.49
  4. Step 4: Simplify right side
    607,918.68x = 296,528,566,682.35
  5. Step 5: Solve for x
    x = 296,528,566,682.35/607,918.68
  6. Step 6: Final answer
    x = 487,776.70

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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.