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Finding the Fourth Proportional to 395,931.16, 546,241.80 and 260,038.72

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Solution

The fourth proportional to 395,931.16, 546,241.80 and 260,038.72 is: 358,759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,931.16 : 546,241.80 = 260,038.72 : x
  2. Step 2: Convert to fraction form
    395,931.16/546,241.80 = 260,038.72/x
  3. Step 3: Cross multiply
    395,931.16x = 546,241.80 × 260,038.72
  4. Step 4: Simplify right side
    395,931.16x = 142,044,018,482.50
  5. Step 5: Solve for x
    x = 142,044,018,482.50/395,931.16
  6. Step 6: Final answer
    x = 358,759.38

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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.